Consulta: subjectFacets:"Pollination"
Registros recuperados: 121
Data/hora: 13/06/2024 01:30:31

Notes on the genus Caiophora (Loasoideae, Loasaceae) in Chile and neighbouring countries
Provedor de dados: 66
Autores: Ackermann,Markus; Weigend,Maximilian.
This is the first revision for the representatives of the genus Caiophora (Loasaceae) in Chile. The genus is widely distributed in the Andes from Argentina/Chile in the South to Central Ecuador in the North, and comprises approximately 60 species. In Chile only five species are present, Caiophora chuquitensis, C. cirsiifolia, C. coronata, C. deserticola sp. nov. and C. rosulata. Caiophora rosulata is here subdivided into two subspecies: western Andean C. rosulata subsp. rosulata (present in northern Chile and southern Peru), and eastern Andean C. rosulata subsp. taraxacoides, stat. and comb. nov. Furthermore C. superba syn. nov. and C. macrocarpa syn. nov. are placed into synonymy under C. chuquitensis, and C. rahmeri syn. nov. is synonymized to C....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caiophora; Chile; Chromosome number; High Andean flora; Loasaceae; Morphology; Pollination; Taxonomy.
Ano: 2007
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932007000100005

Aportaciones al estudio de Claviceps africana Frederickson, Mantle &amp; de Milliano en la producción de semilla de líneas de sorgo en Valles  Centrales de México
Provedor de dados: 32
Autores: Cisneros López, Eugenia.
El ergot (Claviceps africana) es un riesgo para la producción de semilla en líneas  androestériles del sorgo (Sorghum bicolor L. Moench). Para estudiar la relación entre las  características florales, receptividad del estigma, interacción planta-hospedero y producción  de semilla en polinización manual y abierta se realizaron cinco experimentos con líneas A,  B y R adaptadas a los Valles Altos Centrales de México (2200 msnm), en condiciones de  campo. Los resultados indicaron que existen diferencias en las características florales, pero  la mayor variación se observó en la producción de semilla y sus componentes; estas  últimas, igual que la producción de polen viable, fueron las que interaccionaron más con el  ambiente. La cantidad de polen de las líneas...
Tipo: Tesis
Palavras-chave: Pistilo; Polen; Polinización; Receptividad; Sincronía floral; Doctorado; Producción de semillas; Sorghum bicolor; Pistil; Pollen; Pollination; Receptivity; Floral synchrony.
Ano: 2008
URL: http://hdl.handle.net/10521/1248

Eficiencia de polinización, productividad y calidad de semilla y forraje en híbridos trilineales de maíz
Provedor de dados: 32
Autores: Rivas Jacobo, Marco Antonio.
El objetivo fue evaluar y seleccionar líneas elite de maíz; formar y evaluar híbridos trilineales, por su calidad forrajera, considerando calidad de semilla. La investigación se realizó en, Montecillo, Texcoco, Méx., Región Subtropical y Valles Altos. Las variables principales fueron: Aspecto físico de la hoja (AFH), Cualidad Forrajera (CF), Hojas por planta (HPP), Altura de planta (AP), Diámetro de tallo (DT), Mazorcas por planta (MAZP), Rendimiento de grano (RENGR), Hileras por mazorca (HPM), Granos por hilera (GPH), Largo de mazorca (LMZ), Diámetro de mazorca (DMZ), Porcentaje de Granos No Formados (PGNF), Peso de Cien Semillas (PCS), Peso Volumétrico (PV), Porcentaje de Germinación (PG), Rendimiento de, semilla (RS), materia seca de la planta completa...
Palavras-chave: Zea mays L.; Polinización; Forraje; Materia seca; Ensilado; Semilla; Pollination; Forage; Dry matter; Silage; Seed; Doctorado; Producción de semillas.
Ano: 2010
URL: http://hdl.handle.net/10521/71

Eficiencia de polinización, productividad y calidad de semilla y forraje en híbridos trilineales de maíz
Provedor de dados: 32
Autores: Rivas Jacobo, Marco Antonio.
El objetivo fue evaluar y seleccionar líneas elite de maíz; formar y evaluar híbridos trilineales, por su calidad forrajera, considerando calidad de semilla. La investigación se realizó en, Montecillo, Texcoco, Méx., Región Subtropical y Valles Altos. Las variables principales fueron: Aspecto físico de la hoja (AFH), Cualidad Forrajera (CF), Hojas por planta (HPP), Altura de planta (AP), Diámetro de tallo (DT), Mazorcas por planta (MAZP), Rendimiento de grano (RENGR), Hileras por mazorca (HPM), Granos por hilera (GPH), Largo de mazorca (LMZ), Diámetro de mazorca (DMZ), Porcentaje de Granos No Formados (PGNF), Peso de Cien Semillas (PCS), Peso Volumétrico (PV), Porcentaje de Germinación (PG), Rendimiento de, semilla (RS), materia seca de la planta completa...
Palavras-chave: Zea mays L.; Polinización; Forraje; Materia seca; Ensilado; Semilla; Pollination; Forage; Dry matter; Silage; Seed; Doctorado; Producción de semillas.
Ano: 2010
URL: http://hdl.handle.net/10521/71

Causes and Extent of Declines among Native North American Invertebrate Pollinators: Detection, Evidence, and Consequences
Provedor de dados: 7
Autores: Cane, James H; USDA-ARS; jcane@biology.usu.edu; Tepedino, Vincent J; USDA-ARS; andrena@biology.usu.edu.
Ecosystem health and agricultural wealth in North America depend on a particular invertebrate fauna to deliver pollination services. Extensive losses in pollinator guilds and communities can disrupt ecosystem integrity, a circumstance that today forces most farmers to rely on honey bees for much fruit and seed production. Are North America's invertebrate pollinator faunas already widely diminished or currently threatened by human activities? How would we know, what are the spatiotemporal scales for detection, and which anthropogenic factors are responsible? Answers to these questions were considered by participants in a workshop sponsored by the National Center for Ecological Analysis and Synthesis in October of 1999, and these questions form the nucleus...
Tipo: Peer-Reviewed Reports
Palavras-chave: Apiformes; Apoidea; Insecta; Conservation; Diversity; Land-use change; Native invertebrate pollinators; North America; Pollination; Pollinator declines.
Ano: 2001

Quantifying Biodiversity for Building Resilience for Food Security in Urban Landscapes:  Getting Down to Business
Provedor de dados: 7
Autores: Polasky, Steven; Department of Applied Economics, University of Minnesota ; polasky@umn.edu.
A steady stream of ecosystem services is essential for human welfare and survival, and it has been convincingly shown that these flows are being eroded. Compelling theoretical knowledge about essential connections between ecosystem service generation, biodiversity, and resilience in social-ecological systems already exists; however, we still, to a great extent, lack spatially explicit quantitative assessments for translating this theoretical knowledge into practice. We propose an approach for measuring the change in flow and resilience of a regulating ecosystem service on a landscape scale over time when the landscape is exposed to both land use change due to urban expansion, and change in a large-scale economic driver.  Our results quantitatively show...
Tipo: Peer-Reviewed Reports
Palavras-chave: Ecosystem services; Food security; Functional diversity; Pollination; Resilience; Response diversity; Urban ecology.
Ano: 2010

North American Dipteran Pollinators: Assessing Their Value and Conservation Status
Provedor de dados: 7
Autores: Kearns, Carol Ann; University of Colorado at Boulder; kearnsca@rtt.colorado.edu.
Recent attention to pollinator declines has focused largely on bees and vertebrates. However, few pollination systems are obligate, and pollinators that complement the role of bees may respond differently to environmental disturbance. The conservation status of North American fly pollinators remains undocumented. In this paper, methods for monitoring shifts in dipteran pollinator abundance are discussed. The need for further basic research into pollination by flies is addressed, and the significance of dipteran conservation is considered.
Tipo: Peer-Reviewed Reports
Palavras-chave: Anthophilous flies; Anthropogenic disturbance; Conservation; Diptera; Dipteran conservation; Generalist pollinators; North America; Pollination; Pollinator declines; Population fluctuation; Redundant pollination systems.
Ano: 2001

Solution scanning as a key policy tool: identifying management interventions to help maintain and enhance regulating ecosystem services
Provedor de dados: 7
Autores: Sutherland, William J.; Conservation Science Group, Department of Zoology, University of Cambridge; w.sutherland@zoo.cam.ac.uk; Gardner, Toby; Conservation Science Group, Department of Zoology, University of Cambridge; tobyagardner@gmail.com; Bogich, Tiffany L.; Princeton University, Ecology &amp; Evolutionary Biology; tbogich@princeton.edu; Bradbury, Richard B.; Conservation Science Department, Royal Society for the Protection of Birds;; Clothier, Brent; New Zealand Plant &amp; Food Research, Climate Lab;; Jonsson, Mattias; Department of Ecology, Swedish University of Agricultural Sciences;; Kapos, Val; United Nations Environment Programme World Conservation Monitoring Centre;; Lane, Stuart N.; Institute of Hazard, Risk and Resilience, Science Laboratories;; Schroeder, Martin; Department of Ecology, Swedish University of Agricultural Sciences; martin.schroeder@slu.se; Spalding, Mark; The Nature Conservancy and Conservation Science Group, Department of Zoology, University of Cambridge; mspalding@TNC.ORG; Spencer, Tom; Cambridge Coastal Research Unit, Department of Geography, University of Cambridge;; White, Piran C. L. ; Environment Department, University of York;; Dicks, Lynn V.; Conservation Science Group, Department of Zoology, University of Cambridge; lvd22@cam.ac.uk.
The major task of policy makers and practitioners when confronted with a resource management problem is to decide on the potential solution(s) to adopt from a range of available options. However, this process is unlikely to be successful and cost effective without access to an independently verified and comprehensive available list of options. There is currently burgeoning interest in ecosystem services and quantitative assessments of their importance and value. Recognition of the value of ecosystem services to human well-being represents an increasingly important argument for protecting and restoring the natural environment, alongside the moral and ethical justifications for conservation. As well as understanding the benefits of ecosystem services, it is...
Tipo: Peer-Reviewed Insight
Palavras-chave: Climate regulation; Policy making; Pollination; Regulating services; Solution scanning; Water regulation.
Ano: 2014

Habitat Fragmentation and Native Bees: a Premature Verdict?
Provedor de dados: 7
Autores: Cane, James H; USDA-ARS; jcane@biology.usu.edu.
Few studies directly address the consequences of habitat fragmentation for communities of pollinating insects, particularly for the key pollinator group, bees (Hymenoptera: Apiformes). Bees typically live in habitats where nesting substrates and bloom are patchily distributed and spatially dissociated. Bee studies have all defined habitat fragments as remnant patches of floral hosts or forests, overlooking the nesting needs of bees. Several authors conclude that habitat fragmentation is broadly deleterious, but their own data show that some native species proliferate in sampled fragments. Other studies report greater densities and comparable diversities of native bees at flowers in some fragment size classes relative to undisrupted habitats, but find...
Tipo: Peer-Reviewed Reports
Palavras-chave: Apoidea; Bees; Conservation; Diversity; Habitat fragmentation; Land-use change; Pollination; Pollinator; Statistics; Taxonomy.
Ano: 2001

Detrimental effects of volcanic ash deposition on bee fauna and plant-pollinator interactions
Provedor de dados: 67
Autores: Morales,Carolina L.; Saez,Agustín; Arbetman,Marina P; Cavallero,Laura; Aizen,Marcelo A.
Volcanic eruptions are large-scale natural disturbances, which can negatively affect insect fauna and the ecological interactions in which they are involved. The 2011 eruption of the volcanic complex Puyehue Cordón-Caulle (PCC) produced the deposition of 950 million tons of ash on Argentine Patagonia, creating an ash layer of varying thickness. Although experimental studies confirmed that PCC volcanic ash negatively affects survival and behavior in many insect taxa, including bees, the effects of ash deposition on the plant-pollinator interactions (PPI) of this group of insects in natural landscapes remained untested. We evaluated the effect of the gradient of increasing ash layer thickness (0-15cm) on: (1) number of wild bees visiting flowers and total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bombus terrestris; Bumble bees; Large scale disturbance; Pollination; Puyehue Cordón-Caulle Volcano; Raspberry; Scotch broom.
Ano: 2014
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2014000100006

Introduced herbivores and the Allee effect in animal-pollinated plants
Provedor de dados: 67
Autores: Vázquez,Diego P.
Interspecific interactions can be modulated by the community context in which they occur. In this paper I focus on plant-pollinator interactions and their modulation by introduced herbivores through changes in plant population density. I first develop a mathematical model that relates the population density of an animal-pollinated plant species with pollinator visitation frequency, pollination, reproduction and per capita growth rate. This model allows me to investigate how several pollination-related parameters -including relative abundance of the focal plant species, pollinator specialization, pollination quantity and quality and pollen limitation of reproduction- influence the relationship between per capita growth rate and population density. I then...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Allee effect; Density dependence; Introduced herbivores; Mutualism; Plant reproduction; Pollination; Pollinator specialization and generalization; Population dynamics.
Ano: 2007
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2007000100003

Do pollinators respond in a dose-dependent manner to flower herbivory?: An experimental assessment in Loasa tricolor (Loasaceae)
Provedor de dados: 73
Autores: CARES-SUÁREZ,ROXANA; POCH,TOMÁS; ACEVEDO,ROMINA F; ACOSTA-BRAVO,IGNACIO; PIMENTEL,CAROLINA; ESPINOZA,CLAUDIA; CARES,ROCÍO A; MUÑOZ,PAOLA; GONZÁLEZ,ALEJANDRA V; BOTTO-MAHAN,CAREZZA.
Pollinators are able to discriminate among different floral phenotypes. Thus, flowers more attractive to pollinators usually receive more visits to their reproductive structures. However, this effect of attraction does not necessarily occur in a binary way, all-or-nothing. Loasa tricolor KerGawl. is an annual herb covered with stinging hairs. Flowers present a corolla with five yellow petals and red nectarine scales. In this study, we assess whether the variation in the floral phenotype of L. tricolor affects discrimination by pollinators, following a dose-dependent type of response. This study was carried out in a protected area of Chile where L. tricolor shows high levels of florivory, probably affecting its attraction to pollinators. We experimentally...
Tipo: Journal article
Palavras-chave: Flower herbivory; Pollination; Visitation rate; Florivory.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432011000200007

Pollination and breeding system in Adesmia bijuga Phil. (Fabaceae), a critically endangered species in Central Chile
Provedor de dados: 73
Autores: GÓMEZ P,PERSY; LILLO,DIANA; GONZÁLEZ,ALEJANDRA V.
Adesmia bijuga Phil. is an endemic shrub in central Chile, classified as a critically endangered species of plant. After more than 100 years since its original description by R. A. Philippi (1884), the species was rediscovered exclusively in two locations of the Maule Region. One of them, Fundo San Pedro-Las Cañas, is close to extinction with a low number of shrubs, occurring in a disturbed habitat due to plantations of Pinus radiata. This study examined the pollination biology and breeding system of A. bijuga in order to explain their small number of shrubs. We estimated composition of pollinator species attracted to flowers and visitation rates. In order to describe its breeding system in A. bijuga we used manipulated treatments to estimate autonomous...
Tipo: Journal article
Palavras-chave: Critically endangered species; Adesmia bijuga; Pollination; Breeding system; Visitation rate.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432012000200008

Stigma receptivity and anther dehiscence in ornamental pepper
Provedor de dados: 75
Autores: Crispim,Joelson Germano; Rêgo,Elizanilda R; Rêgo,Mailson M; Nascimento,Naysa Flávia F; Barroso,Priscila A.
ABSTRACT The objective of this study was to evaluate stigma receptivity and anther dehiscence in three floral development stages in F3 population of ornamental pepper (Capsicum annuum). A total of 162 plants (81 of purple corolla and 81 of white corolla) were used in this study. To analyze the stigma receptivity and anther dehiscence, three floral stages were analyzed: bud, pre-anthesis, and open flower. For each stage, 33 flowers of each phenotypic class were collected. The receptivity of the stigma was detected by dripping hydrogen peroxide solution (3%). For the evaluation of the level of receptivity, scores of 0 to 3 were assigned, varying according to the bubbles percentage found on the stigmatic surface. Scores of 1 to 5 were assigned for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum; Breeding; Floral biology; Pollination.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000400609

Plant spacing and pollen quantity on yield and quality of squash seeds
Provedor de dados: 75
Autores: Lima,Márcio S. de; Cardoso,Antonio I. I.; Verdial,Marcelo F.
Squash seeds yield and quality can be improved by proper population plant spacing and the pollen quantity, which influences the pollination quality and fertilization. Nine experiments were conducted as a factorial combination of three spacing between plants (0.8 x 0.3, 0.8 x 0.6 and 0.8 x 0.9 m), two quantities of pollen (50% of an anther and another entire one) and natural insect pollination. Seed and fruit production parameters, and seed quality were evaluated. A randomized complete block design, five replications, with ten plants per plot was adopted. Larger plant spacing increased the average number of mature fruits and seed yield per plant. Seed yield was directly proportional to the amount of pollen used during pollination. Higher amounts of pollen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucurbita pepo L.; Pollination; Germination; Vigor.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362003000300005

Entomofauna and potential pollinators of strawberry crop under semi-hydroponic conditions
Provedor de dados: 75
Autores: Piovesan,Bruna; Padilha,Aline C; Botton,Marcos; Zotti,Moisés João.
ABSTRACT Strawberry cultivation under semi-hydroponic conditions has increased in the Southern region of Brazil since it facilitates management, besides avoiding weather adversities, pests and diseases. However, protected environment can hamper the access of pollinator insects, essential for crop productivity. This work aimed to know the entomofauna associated with strawberry cultivar Albion cultivated under semi-hydroponic conditions and to identify potential species of native pollinating bees. Insects were captured at different times of the day (9:30 a.m., 12:30 p.m. and 3:30 p.m.) in three commercial crops located in Bento Gonçalves and Farroupilha, Rio Grande do Sul. In each study area, three days of sampling were carried out during January 2017. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragaria x ananassa; Pollination; Agriculture; Diversity; Native bees.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000300324

Estrutura floral das angiospermas usadas por Heliconius erato phyllis (Lepidoptera, Nymphalidae) no Rio Grande do Sul, Brasil
Provedor de dados: 76
Autores: Corrêa,Claudine A.; Irgang,Bruno E.; Moreira,Gilson R.P.
A field survey of flowering plants used as food resource by the adults of Heliconius erato phyllis (Fabricius, 1775) was carried out in four sites located in Rio Grande do Sul state, Brazil. Samples were taken in preserved areas of the Atlantic Rain and Myrtaceae forests, an Eucalyptus plantation, and an urban park. Adult feeding frequencies on flowers were registered monthly from December 1996 to May 1997, on plants located on previously marked 200 m long transects. Flowers on which H. erato phyllis fed in the field were collected, drawn and morphometrically characterized. Feeding was registered on flowers of twenty-three species, of which seventeen are new records for H. erato in Brazil . The use of a given plant varied among localities, as a function of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollination; Pollen feeding; Lepidoptera; Ecology; Heliconius erato phyllis.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000100008

The efficiency of bees in pollinating ephemeral flowers of  Jacquemontia bracteosa (Convolvulaceae)
Provedor de dados: 76
Autores: Santos,Sílvia K. D.; Gimenes,Miriam.
ABSTRACT The family Convolvulaceae is widely distributed in tropical regions, mainly in open areas. Convolvulaceae flowers are characterized mainly by being beautiful and ephemeral, attracting many flower visitors that belong to different taxonomic groups. This work aimed to investigate the interactions between insects and flowers of Jacquemontia bracteosa (Convolvulaceae), focusing on the pollination efficiency, in an area in the Brazilian semiarid. From November 2011 to October 2012, floral biology of J. bracteosa was investigated as well as the flower visit frequency, behavior, and morphology of floral visitors. The flowers of J. bracteosa are white, showy and open early in the morning, lasting less than 12 hours, with fruiting occurring both by selfing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollination; Ancyloscelis apiformis; Augochlora; Jacquemontia bracteosa; Apoidea.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100225

Polinização de Passiflora edulis f. flavicarpa (Passiflorales, Passifloraceae), por abelhas (Hymenoptera, Anthophoridae) em Campos dos Goytacazes, Rio de Janeiro
Provedor de dados: 76
Autores: Hoffmann,Magali; Pereira,Telma N. S.; Mercadante,Maria Beatriz; Gomes,André Raeli.
The yellow passion Passiflora edulis f. flavicarpa Deg. is allogamous, self incompatible, and it depends of insects pollinators to disseminate the pollen grains. The field work was conducted at Campos dos Goytacazes, Rio de Janeiro, Brazil, from October 17 to November 9 and December 12 to 21, 1995. It was analyzed 1565 flower buds, from which 423 showed well developed ovaries, five days after opening, this represents 27% of fruit set by natural pollination. It was observed 76,86 % of completely curved flowers, 21,22 % of partially curved flowers, and 1,92 % flowers without curvature. Five species of bees where observed on the flowers, from which two were the effective pollinator of yellow passion flower: Xylocopa (Megaxylocopa) frontalis (Olivier, 1789)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Xylocopa; Passiflora; Pollination; Eastern Brazil.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212000000200002

Insetos visitantes e seu comportamento em inflorescências de urucuzeiro (Bixa orellana) em Belém-Pará.
Provedor de dados: 14
Autores: VENTURIERI, M. M.; VENTURIERI, G. C.
bitstream/item/60193/1/CPATU-PA154.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Urucu; Belém; Pará; Brasil; Useful insects.; Bixa Orellana; Inseto Polinizador; Polinização.; Amazonia; Pollination; Pollinators.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/374154

Ecologia da polinização da aroeira-do-sertão.
Provedor de dados: 14
Autores: KIILL, L. H. P.; SILVA, P. P. da.
Morfologia e biologia floral; visistantes florais; frutos.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Aroeira-do-Sertão; Bioma Caatinga; Biologia floral.; Polinização; Ecologia; Abelha; Inseto; Caatinga; Fruto.; Ecology; Pollination; Fruits.; Insects.
Ano: 2008
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/159735

Abelhas visitantes florais e potenciais polinizadoras das cultivares de maracujás silvestres.
Provedor de dados: 14
Autores: SOUZA, L. S.; PIRES, C. S. S.; LAGÔA, A. C. G.; SOUZA, L. M. de; SOUSA, A. A. T. C. de; FALEIRO, F. G.; SUJII, E. R.
Diversas espécies vegetais de interesse agrícola são dependentes das abelhas para polinização. Esse é o caso das plantas auto incompatíveis, como a maioria das espécies do gênero Passiflora. Atualmente, toda a produção do maracujá comercial é obtida praticamente por meio da polinização manual, gerando maiores custos para o sistema de produção e maior dependência de mão-de-obra. Visando à proposição de medidas que promovam o aumento da polinização por abelhas, este estudo teve como objetivo conhecer a fauna de abelhas visitantes florais e potenciais polinizadoras das cultivares de maracujá doce BRS Mel do Cerrado (Passiflora alata), maracujás silvestres BRS Sertão Forte (P. cincinnata) e BRS Pérola do Cerrado (P. setacea), na região do Distrito Federal....
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Maracujazeiro; Cultivar; Diversidade de abelhas; Polinização; Pollination; Passion fruits.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1111129

As abelhas e a produção de sementes do amendoim forrageiro.
Provedor de dados: 14
Autores: DRUMOND, P. M.; CARDOSO, G. A.
O estudo realizado no campo experimental da Embrapa Acre teve como objetivo principal investigar o papel dos insetos, em particular, das abelhas, na polinização e produção de sementes do amendoim forrageiro no Município de Rio Branco, AC.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Amendoim forrageiro; Forage peanuts; Cacauhetes forrajeros; Bees; Western Amazon; Análisis estadístico; Embrapa Acre; Abejas; Rio Branco (AC); Acre; Amazônia Ocidental; Amazonia Occidental; Producción de plántulas.; Pastizales; Leguminosas forrajeras; Polinización; Leguminosa forrageira; Campo Experimental; Análise estatística; Pastagem; Produção de sementes; Polinização; Abelha; Características Agronômicas.; Pollination; Apidae; Statistical analysis.; Agronomic traits; Forage legumes; Pastures; Seedling production; Arachis pintoi.
Ano: 2003
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/993697

A cultura do milho na Amazônia.
Provedor de dados: 14
Autores: PEREIRA, O. G.
bitstream/item/69744/1/IPEAN-Fitotecnia1.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Melhoramento genetico; Brasil; Maize; Cultivation; Genetic breeding; Cultural practices; Yield; Harvest.; Colheita; Milho; Pesquisa; Polinização; Pratica Cultural; Produtividade.; Plantio; Amazonia; Pollination; Planting; Research.
Ano: 1971
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376203

Flor do maracujazeiro-azedo e polinização natural.
Provedor de dados: 14
Autores: DRUMOND, P. M.; MAUES, M. M.; JUNQUEIRA, N. T. V.
Descreve a fisiologia da flor do maracujazeiro e o processo de polinização natural.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Yellow passion fruit; Acre; Amazônia Ocidental; Western Amazon; Maracujá; Passiflora Edulis; Flor; Polinização; Flowers; Pollination.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1132380

Insetos visitantes e polinizadores em palmeiras nativas da Amazônia.
Provedor de dados: 14
Autores: COUTURIER, G.; OLIVEIRA, M. do S. P. de; BESERRA, P.
bitstream/item/57864/1/Oriental-PA1.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Tucumã; Inseto polinização; Oenocarpus mapora; Oenocarpus bacaba; Oenocarpus minor; Oenacarpus distichus; Brasil; Oil palms; Indigenous organisms; Usuful insects; Indegenous organism.; Açaí; Bactris Gasipaes; Bacaba; Astrocaryum vulgare; Euterpe Oleracea; Espécie Nativa; Inseto Polinizador; Jessenia Bataua; Palmeira Oleaginosa; Patauá; Polinização; Pupunha.; Amazonia; Pollinators.; Pollination.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376515

Técnicas de produção de sementes de melancia, via polinizações manuais controladas, em campo e casa-de-vegetação.
Provedor de dados: 14
Autores: FERREIRA, M. A. J. da F.
bitstream/CENARGEN/26620/1/ct040.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Casa-de-vegetação; Water melon; Production.; Citrullus Vulgaris; Melancia; Polinização; Produção; Semente.; Reprodução; Pollination; Reproduction.
Ano: 2005
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/187028

Teste de progênies por polinização aberta de freijó (Cordia goeldiana).
Provedor de dados: 14
Autores: KANASHIRO, M.; YARED, J. A. G.
bitstream/item/57470/1/CPATU-PA114.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Freijó.; Cordia Goeldiana; Essência Florestal; Polinização; Teste de Progênie.; Forest trees; Pollination; Progeny testing.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383297

Cultura do maracujazeiro no Estado do Acre.
Provedor de dados: 14
Autores: ANDRADE NETO, R. de C.; NOGUEIRA, S. R.; NEGREIROS, J. R. da S.; NASCIMENTO, G. C. do.
Práticas agrícolas, como escolha e manejo adequado do solo, utilização de cultivares adaptadas à região, adoção de espaçamentos corretos, além de calagem e adubação, irrigação, podas, polinizações manuais, controle fitossanitário de pragas, entre outras, podem levar o maracujazeiro a atingir altas produtividades. Desse modo, a Embrapa Acre coloca à disposição dos produtores, professores e extensionistas, de forma objetiva e concisa, uma importante publicação que aborda as práticas inerentes ao cultivo do maracujazeiro de forma sustentável e econômica.
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Producción de plántulas; Yellow passion fruit; Análisis económico; Uso de la tierra; Cultivares; Prácticas de cultivo vegetal; Huertos frutales; Encalado; Aplicación de fertilizantes; Irrigación; Polinización; Control de malezas; Plagas de plantas; Enfermedades y desórdenes de las plantas; Cosecha; Tratamiento postcosecha; Comercialización; Economía de mercado; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental.; Maracujá; Passiflora Edulis; Sistema de Produção; Uso da Terra; Variedade; Pratica Cultural; Muda; Produção; Pomar; Calagem; Adubação; Irrigação; Poda; Polinização; Erva Daninha; Praga de Planta; Doença de Planta; Colheita; Mercado.; Comercialização; Pós-Colheita; Análise Econômica; Pruning; Weed control; Plant pests; Plant diseases and disorders; Harvesting; Postharvest treatment; Commercialization; Market economy.; Fertilizer application; Irrigation; Pollination; Economic analysis; Land use; Cultivars; Plant cultural practices; Seedling production; Orchards; Liming.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1132364

Diversidade de abelhas (Humenoptera : Apoidea) em inflorescências de Piper hispidinervum (C.DC.).
Provedor de dados: 14
Autores: THOMAZINI, M. J.; THOMAZINI, A. P. de B. W.
Objetivou-se determinar quais são as principais espécies de abelhas que visitam as inflorescências de pimenta longa, sua abundância e freqüência relativas, seus horários de visitaçâo e a influência de fatores climáticos na variação de suas abundâncias relativas.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Rio Branco (AC); Acre; Amazônia Ocidental; Amazonia occidental; Bee; Polinización; Western amazon; Abelha; Polinização; Pimenta longa; Piper hispidinervum; Pollination; Piper longum.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/498803

Manejo e praticas culturais e fitossanitario em gravioleira no cerrado.
Provedor de dados: 14
Autores: VARGAS RAMOS, V. H.; OLIVEIRA, M. A. S.; PINTO, A. C. de Q.; JUNQUEIRA, N. T. V.; ICUMA, I. M.
bitstream/CPAC-2009/24552/1/comtec_81.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Cultura perene; Productivity; Integrated control; Pests of plants.; Annona Muricata; Cerrado; Controle Integrado; Graviola; Produtividade.; Poda; Polinização; Praga de Planta; Pollination; Pruning.; Perennials.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/557077

A importancia da polinizacao manual para aumentar a produtividade do maracujazeiro.
Provedor de dados: 14
Autores: JUNQUEIRA, N. T. V.; VERAS, M. C. M.; NASCIMENTO, A. C. do; CHAVES, R. da C.; MATOS, A. P.; JUNQUEIRA, K. P.
bitstream/CPAC-2009/23811/1/doc_41.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Produção de semente; Fruit; Seed production.; Fruto; Frutificação; Maracujá; Passiflora Edulis; Polinização; Reprodução Vegetal.; Fruiting; Pollination; Passion fruits; Reproduction.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567146

Honey bee attractants and pollination in sweet orange, Citrus sinensis (L.) Osbeck, var. Pera-Rio
Provedor de dados: 80
Autores: Malerbo-Souza,D. T.; Nogueira-Couto,R. H.; Couto,L. A.
This experiment studied the frequency and behavior of insects on sweet orange flowers, Citrus sinensis (L.) Osbeck, their effect on fruit production (quantity and quality), nectar and pollen collection, and the effectiveness of different attractants. Over three consecutive years, the most frequent visitor to the flowers was Apis mellifera (Africanized). Flowers visited less than ten times showed low fructification. Fruit production was 35.30% greater in uncovered flowers. Fruit mean weight was much greater in uncovered (180.2g) than in covered flowers (168.5g). Fruits from the covered were more acid (1.411g of citric acid/100ml of juice) than the uncovered flowers (1.164g of citric acid/100ml of juice). The number of seeds per bud was higher in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Attractants; Citrus sinensis var. Pera-Rio; Pollination; Apis mellifera.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992004000200004

Possible chemical mimicry of the European lady’s slipper orchid (Cypripedium calceolus)
Provedor de dados: 16
Autores: Przybyłowicz, T.; Roessingh, P.; Groot, A.T.; Biesmeijer, J.C.; Oostermijer, J.G.B.; Chittka, L.; Gravendeel, B.
Pollination based on insect deception has been debated in the scientific community since it was first reported over two hundred years ago. A vast majority of deceptive syndromes occur within the orchid family. While many cheating flowers have been described and are well known, there are still many curious cases that need further investigation. One prime example of such a case is Cypripedium calceolus, known as European lady’s slipper orchid. While the flower has been of interest to many prominent scientists for over a century, its pollination is still not fully understood. Both visual and olfactory cues seem to play an important role in pollinator attraction. In this study we focussed on the olfactory cues in order to explore their relationship (in future...
Tipo: Article / Letter to the editor
Palavras-chave: Bees; Behaviour; Chemical mimicry; Deception; EAG; Pollination; 42.75.
Ano: 2012
URL: http://www.repository.naturalis.nl/record/419174

Elaborate Petals in Australian Spermacoce (Rubiaceae) Species: Morphology, Ontogeny and Function
Provedor de dados: 16
Autores: Vaes, E.; Vrijdaghs, A.; Smets, E.; Dessein, S.
Background and Aims Australian Spermacoce species display various types of elaborate petals. Their precise morphology, ontogenetic origin, and function are hitherto unknown. The aim of the present paper is to unravel the development and nature of the diverse types of elaborate petals in Spermacoce through a floral ontogenetic study.    Methods The floral ontogeny of six species characterized by different types of corolla appendages was studied by scanning electron microscopy and light microscopy. In order to elucidate the possible functions of the elaborate petals, field observations were conducted as well.   Key Results Scanning electronmicrographs show that full-grown petals of Spermacoce lignosa, S. phaeosperma and S. redacta bear appendages on their...
Tipo: Article / Letter to the editor
Palavras-chave: Australia; Corolla appendages; Elaborate petals; Floral ontogeny; Pollination; Rubiaceae; Spermacoce brevidens; S. caudata; S. erectiloba; S. lignosa; S. phaeosperma; S. redacta.
Ano: 2006
URL: http://www.repository.naturalis.nl/record/407325

Pollination and protection against herbivory of Nepalese Coelogyninae (Orchidaceae)
Provedor de dados: 16
Autores: Subedi, A.; Chaudhary, R.P.; Achterberg, C. van; Heijerman, T.; Lens, F.; Dooren, T.J.M. van; Gravendeel, B.
• Premise of the Study: Although many species in the orchid genus Coelogyne are horticulturally popular, hardly anything is known about their pollination. Pollinators of three species were observed in the fi eld in Nepal. This information is urgently needed because many orchid species in Nepal are endangered. Whether the exudates produced by extrafl oral nectaries played a role in protection against herbivory was also investigated.  • Methods: Pollinators of C. fl accida , C. nitida , and Otochilus albus were filmed, captured, and identifi ed. Ant surveys and exclusion experiments were carried out. To investigate whether pollinators are needed for fruit set, plants were wrapped in mesh wire bags. Infl orescence stems were examined with microscopy. Fehling...
Tipo: Article / Letter to the editor
Palavras-chave: Ants; Apis cerana; Bombus kashmirensis; Coelogye; Herbivory; Nectary-modified stomata; Nepal; Otochilus; Pholidota; Pollination.
Ano: 2011
URL: http://www.repository.naturalis.nl/record/430082

Floral visitors of Chamaecrista debilis (Vogel) Irwin &amp;amp; Barneby (Fabaceae - Caesalpinioideae) at cerrado of Estação Ecológica de Jataí, São Paulo State, Brazil
Provedor de dados: 82
Autores: Nascimento,Elynton A. do; Del-Claro,Kleber.
Although Chamaecrista Moench genus is a very important source of pollen to bees in the Cerrado, this relationship is almost unknown. Within flower visitors of Ch. debilis, we found hymenopterans (Apidae) as the most abundants, but Coleoptera (Buprestidae) and Lepidoptera (Noctuidae) were also collected. Bees of great size are pointed out as effective pollinators of Cassiinae. Only five out of seventeen species of floral visitors of Ch. debilis sampled in cerrado, are indicated as possible pollinators, from which four species were not previously indicated in other papers.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollination; Bee; Cassiinae; Apidae.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000400024

Abelhas generalistas (Meliponina) e o sucesso reprodutivo de Stryphnodendron pulcherrimum (Fabales: Mimosaceae) com florada em massa na Mata Atlântica, BA
Provedor de dados: 82
Autores: Monteiro,Daniela; Ramalho,Mauro.
It is controversial the role played by Meliponina bees in the pollination of mass flowering trees with small generalized flowers (FMPG), very common group of trees in the tropical forest canopy. The species richness and relative abundance of flower visiting insects of the mass flowering tree Stryphnodendron pulcherrimum were measured to test the hypothesis of tight ecological association between these generalist bees and FMPG and to evaluate the effect of this relationship upon the reproductive success variation among tree crowns. The flower visiting insects were sampled on 10 flowering tree crowns at the Atlantic Rainforest in southern Bahia. Altogether, 553 visiting insects were collected during the flowering period of S. pulcherrimum: 293 (52%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stingless bee; Pollination; Geitonogamy; Canopy.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400009

Food resources and population pattern in Apis mellifera hives used for apple pollination
Provedor de dados: 86
Autores: Bizotto,Lucas de Almeida; Santos,Regis Sivori Silva dos; Boff,Mari Ines Carissimi.
Abstract: The objective of this work was to evaluate the variations in the stored food resources and in the number of immature bees in Apis mellifera hives used for apple (Malus domestica) pollination. The study was conducted in the municipality of Vacaria, in the state of Rio Grande do Sul, Brazil, with 40 hives, over two consecutive harvests. The evaluations were done in the hive brood frames before, during, and 45 days after a pollination period, by interpreting photographic field records. Before being transported to the orchards, the bees foraged primarily in areas with native forest or canola (Brassica napus) crop, in 2014/2015, and with native forest or eucalyptus (Eucalyptus sp.) reforestation, in 2015/2016. In both harvests, the percentage of food...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica napus; Eucalyptus; Malus domestica; Floral resource; Pollination.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400399

Thidiazuron effects on shoot growth, return bloom, fruit set and nutrition of apples
Provedor de dados: 86
Autores: Amarante,Cassandro Vidal Talamini do; Ernani,Paulo Roberto; Blum,Luiz Eduardo Bassay; Megguer,Clarice Aparecida.
Apple (Malus domestica Borkh.) trees, cultivars Gala and Fuji, were sprayed at full bloom with thidiazuron (TDZ) at doses of 0, 5, 10, or 20 g ha-1 of a.i. in order to evaluate its effects on plant growth and development, return bloom, fruit set, nutrition, and fruit yield. Fruit set increased with TDZ dose in 'Gala' but not in 'Fuji'. TDZ did not affect fruit yield in any cultivar. In 'Gala', the return bloom was reduced in about 50% at TDZ doses of 10 or 20 g ha-1. TDZ increased shoot growth in both cultivars. In leaves, TDZ decreased the concentration of Ca and Mg in 'Gala' and of Mg in 'Fuji', but did not affect the chlorophyll content, leaf area, length, width, and dry mass per cm² regardless of cultivar. In fruits, the effect of TDZ varied according...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Cytokinin; Phenylurea; Calcium; Fruit yield; Pollination; Plant development.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002001000003

Floral biology and breeding system of three Ipomoea weeds
Provedor de dados: 87
Autores: Maimoni-Rodella,R.C.S.; Yanagizawa,Y.A.N.P.
The floral biology of three weeds, Ipomoea cairica, I. grandifolia and I. nil (Convolvulaceae), was studied in Botucatu and Jaboticabal, São Paulo, in southeastern Brazil. The three species are melittophilous, with a varied set of floral visitors, but with some overlapping. Cluster analysis using Jacquard similarity index indicated a greater similarity among different plant species in the same locality than among the populations at different places, in relation to floral visitor sets. The promiscuous and opportunistic features of the flowers were shown, with such type of adaptation to pollination being advantageous to weeds since pollinator availability is unpredictable at ruderal environments.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollination; Bees; Morning-glory.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582007000100004

Positiv externality of honey production
Provedor de dados: 31
Autores: Vanyi Arvane,   Georgina; Csapo,   Zsolt; Karpati,   Laszlo.
Bee-keeping and honey production has a long history in Hungary. Honey is an important and healthy food of people and it can be consumed without any human processing. The honey production has important role, too. Some researchers say that if honey bee will extinct the humanity in the world would also extinct. It is true since plant pollination by honey bees is very important. It is confirmed by researchers’ studies that plant pollination by honey bees has significant positive external impacts on potential yields in orchards. Although the contribution of honey production to the GDP in Hungary is only a few per cent, other benefits play more important role. One of them is the positive external effect – mentioned above – and the other is the contribution to...
Tipo: Conference Paper or Presentation
Palavras-chave: Honey production; Honey bees; Pollination; Economic values; Positive externality; Agribusiness; Agricultural and Food Policy; Demand and Price Analysis; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy; Production Economics; Productivity Analysis.
Ano: 2010
URL: http://purl.umn.edu/109313

An Economic Valuation of Pollination Services in Georgia
Provedor de dados: 31
Autores: Barfield,   Ashley; Bergstrom,   John C.; Ferreira,   Susana.
The production of many crops depends on biotic pollination. As pollinator populations decline, assessments of the potential consequential loss of economic value are critical. We estimate the economic value of pollination services ($608 million), crop vulnerability ratio (21 percent), and pollination’s contribution to agricultural production value (5 percent) for Georgia.
Tipo: Presentation
Palavras-chave: Pollination; Colony Collapse Disorder; Georgia; Bioeconomic; Value; Vulnerability; Ecosystem Services; Crops; Honeybees; Pollinators; Pollination Dependency; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119780

Strategies for Strengthening and Scaling up Community-based Seed Production
Provedor de dados: 31
Tipo: Report
Palavras-chave: Maize; Agricultural economics; Seed production; Plant breeding; Pollination; Hybrids; Planting date; Models; Small farms; Training programmes; International cooperation; South Africa; Crop Production/Industries; E16; F03.
Ano: 2006
URL: http://purl.umn.edu/56181

The Dynamics of Pollination Markets
Provedor de dados: 31
Autores: Champetier,   Antoine.
The economic problem of a commercial beekeeper is akin to that of a traveling salesman with the important difference that bees simultaneously pollinate crops and feed on them. In other words, bees not only provide pollination services but also feed on the crops they visit. As a result, the number and price of bees available for pollination at any time for any crop is determined by the demand for pollination services and the supply of bee food from other crops in the market. I develop a dynamic model of yearly  fluctuations in the stock of honey bees and combine it with an economic model of beekeeper's behavior. This dynamic model of bee population highlights the fact that they are a renewable resource whose economic value is derived from both extraction...
Tipo: Conference Paper or Presentation
Palavras-chave: Pollination; Beekeeping; Pollination markets; Bee population dynamics; Crop Production/Industries; Environmental Economics and Policy; Q57.
Ano: 2010
URL: http://purl.umn.edu/61813

Biologia floral de Unonopsis guatterioides (A. D.C.) R.E. Fr., uma Annonaceae polinizada por Euglossini
Provedor de dados: 88
Autores: CARVALHO,RAQUEL; WEBBER,ANTONIO C.
A biologia floral e a polinização por abelhas Euglossini de uma Annonaceae é descrita pela primeira vez e as adaptações a esse modo de polinização são comparadas às de outras espécies da família, que é predominantemente polinizada por coleópteros. A espécie Unonopsis guatterioides foi estudada em dois fragmentos de mata de terra firme no município de Manaus (AM). As flores são protogínicas e permanecem abertas expondo os estigmas e estames durante a antese que ocorre entre dois dias. São visitadas por machos de Eulaema bombiformis (Euglossini) que coletam o odor o qual se assemelha ao de "capim cidreira" (Andropogum nardus L.). Visitas de abelhas Meliponidae e coleópteros Chrysomelidae também foram registradas. Unonopsis guatterioides apresenta dicogamia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annonaceae; Floral biology; Pollination; Euglossini; Amazon.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042000000400008

Reproductive biology of the herkogamous vine Chiococca alba (L.) Hitchc. (Rubiaceae) in the Atlantic Rain Forest, SE Brazil
Provedor de dados: 88
Autores: Castro,Cibele Cardoso de; Oliveira,Paulo Eugênio Alves Macedo de; Pimentel,Rejane Magalhães de Mendonça.
The family Rubiaceae comprises a wide spectrum of floral mechanisms and two of them seem to be common in certain groups, e.g., distyly in Rubioidae and styllar pollen in Ixoroidae. These mechanisms include herkogamy, which is interpreted as a strategy that avoids self-pollination. This is the first report on the reproductive biology of Chiococca alba, a species that is widely distributed in America. We studied floral biology and the mating system, which were evaluated through fruit set comparisons after controlled crosses (self- and cross-pollinations and test for apomixis), as well as through the evaluation of pollen tube growth resulting from these controlled crosses. Flowers of C. alba are herkogamous, cream, protandrous and lasted for two days. No...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Rain Forest; Breeding system; Chiococca; Floral biology; Herkogamy; Pollination; Rubiaceae.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000200014

Biologia floral e fenologia reprodutiva do camu-camu (Myrciaria dubia (H.B.K.) McVaugh, Myrtaceae) no Estado Pará, Brasil
Provedor de dados: 88
Autores: MAUÉS,MÁRCIA  M.; COUTURIER,GUY.
O camu-camu (Myrciaria dubia (H.B.K.) McVaugh, Myrtaceae) é uma fruteira nativa que ocorre nas margens de rios e lagos inundáveis da Amazônia, e está sendo domesticada visando o cultivo em terra firme. O alto teor de ácido ascórbico nos frutos, cerca de 2.800 mg.100g-1 de polpa, fortalece a demanda para consumo no país e exportação. No período de 1997 a 1998, investigou-se a biologia floral e fenologia reprodutiva do camu-camu, em plantios da Embrapa Amazônia Oriental, em Belém, e em áreas de ocorrência natural, em Santarém e Oriximiná, no Estado do Pará, norte do Brasil. Observações diretas sobre o comportamento dos visitantes foram acompanhadas da coleta de espécimens para identificação e registro fotográfico. M. dubia apresenta inflorescências com...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon region; Bees; Native fruit tree; Melittophily; Pollination.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002012000008

Biologia da polinização e da reprodução de três espécies de Combretum Loefl. (Combretaceae)
Provedor de dados: 88
Autores: QUIRINO,ZELMA GLEBYA MACIEL; MACHADO,ISABEL CRISTINA.
Foram estudadas a biologia floral, a polinização, a reprodução e a fenologia de três espécies de Combretum em populações naturais, ocorrentes em áreas diferentes de Caatinga (C. leprosum Mart. e C. pisonioides Taub.) e de Mata Atlântica (C. fruticosum (Loefl.) Stuntz) em Pernambuco e na Paraíba, Nordeste do Brasil. As três espécies apresentam floração contínua, que se inicia após o período de chuvas. As flores mudam de cor, durante o período de antese. A concentração média de açúcares no néctar é de 20,9% (sd = 2,08) em Combretum pisonioides, 21,3% (sd = 2,97) em C. leprosum e 9,6% (sd = 0,86) em C. fruticosum. As três espécies são auto-incompatíveis, com viabilidade polínica superior a 95%. Combretum pisonioides e C. leprosum apresentam características...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Combretum; Pollination; Mellittophily; Ornithophily; Caatinga; Atlantic forest.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000200008

Synchrony is more than overlap: measuring phenological synchronization considering time length and intensity
Provedor de dados: 88
Autores: Freitas,Leandro; Bolmgren,Kjell.
The degree of flowering and fruiting synchronization is believed to have ecological and evolutionary relevance at several scales. Here we discuss some measures that have been used to estimate synchrony and propose an index that incorporates both the entire length of an individual phenophase and variation in the number of flowers or fruits over that time period. This new index describes more accurately the phenological synchrony among individuals and populations.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Fitness; Phenology; Pollination; Population ecology; Seed dispersal.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000400017

Flowering phenology, seed set and arthropod guilds in Trichogoniopsis adenantha (DC) (Asteraceae) in south-east Brazil
Provedor de dados: 88
Autores: Romero,Gustavo Q; Vasconcelos Neto,João.
and glades. This species blooms throughout the year, attracting arthropods of various guilds, including herbivores, pollinators and predators. In this study, done over a two year period, we described the phenology of T. adenantha and assessed the seasonal variation in arthropod numbers of different guilds. We also determined the periods of lowest and highest seed set. T. adenantha population showed a peak in flowering in March-April (rainy season) with greater production of achenes in December-April. April and October had respectively highest and lowest number of fertilized, undamaged ovules, and this pattern is possibly related with population dynamics of pollinators and herbivores. In August, which was the period of greatest damage to the stigma (by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal-plant interactions; Floral herbivory; Pollination; Population dynamics; Pre-dispersal seed predation.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042005000100014

Biologia floral de Vochysia cinnamomea Pohl (Vochysiaceae) em cerrados do Triângulo Mineiro, MG
Provedor de dados: 88
Autores: Santos,Mirley Luciene; Afonso,Aline de Paula; Oliveira,Paulo Eugênio.
(Biologia floral de Vochysia cinnamomea Pohl (Vochysiaceae) em cerrados do Triângulo Mineiro, MG). Vochysia cinnamomea é uma arvoreta de cerrado comum na região do triângulo mineiro. Apresenta flores zigomorfas com pétalas amarelas e cálice gamossépalo com um dos lobos maior e calcarado. As flores abrem pela manhã e duram apenas um dia. Apresentam um estame que se desprende durante a antese, depositando o pólen no estilete, o que representa um tipo de apresentação secundária de pólen. As flores são visitadas principalmente por abelhas do gênero Epicharis e outras Anthophoridae, que são os polinizadores primários, mas beija-flores e esfingídeos diurnos também foram observados. A planta é parcialmente autocompatível, sendo os frutos formados por...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollination; Secondary pollen presentation; Large bees; Savanna; Vochysiaceae.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000200003

Polinização e biologia floral de Clusia arrudae Planchon &amp;amp; Triana (Clusiaceae) na Serra da Calçada, município de Brumadinho, MG
Provedor de dados: 88
Autores: CARMO,ROSELAINI M.; FRANCESCHINELLI,EDIVANI V.
A biologia floral e a polinização de Clusia arrudae foi estudada na Serra da Calçada. C. arrudae não apresenta apomixia mesmo com a deposição de resina nos estigmas. Frutos desenvolvidos a partir de flores polinizadas manualmente produziram mais sementes (6,3 sementes por lóculo) do que frutos desenvolvidos a partir de flores polinizadas naturalmente (4,3 sementes por lóculo). O pico de floração ocorre de dezembro a meados de fevereiro. Plantas masculinas e femininas produzem flores diariamente; todavia, a cada três dias ocorre um pico de anteses que é sincronizado na população. A razão sexual da população é de 1:1, com plantas masculinas produzindo uma maior quantidade de flores que plantas femininas. Flores masculinas produzem cerca de 11 × 10(6) grãos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clusia arrudae; Eufriesea nigrohirta; Floral biology; Pollination.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002000300011

Reproductive biology of Pseudolaelia corcovadensis Porto &amp;amp; Brade (Orchidaceae): melittophyly and self-compatibility in a basal Laeliinae
Provedor de dados: 88
Autores: Borba,Eduardo L.; Braga,Pedro Ivo S.
The floral biology, mating systems and phenology of Pseudolaelia corcovadensis (Orchidaceae), in the "Estação de Pesquisa e Desenvolvimento Ambiental de Peti", São Gonçalo do Rio Abaixo, Minas Gerais state was studied. This species flowers from April to September, with a higher availability of flowers in June and July. The flowers are dark-pink, strongly zygomorphic, and have osmophores and nectar-guides absorbing ultraviolet light. However, the flowers of P. corcovadensis do not present nectar and are pollinated by Bombus (Fervidobombus) atratus Franklin, 1913 (Hymenoptera: Apidae) by deceit. Apparently, the flowers do not form a model-mimic pair with other species in the community, but mimic a generalized melittophilous food-flower. As a consequence,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Melittophily; Orchidaceae; Pollination; Pseudolaelia; Reproductive biology.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042003000400013

Reproductive biology of the protandrous Ferdinandusa speciosa Pohl (Rubiaceae) in Southeastern Brazil
Provedor de dados: 88
Autores: CASTRO,CIBELE CARDOSO DE; OLIVEIRA,PAULO EUGÊNIO ALVES MACEDO DE.
A study of the floral biology and the breeding system of Ferdinandusa speciosa Pohl (Rubiaceae) was carried out from March to September 1996 in Uberlândia, MG, central Brazil. This species is a shrub or small tree that occurs in swampy edges of gallery forests. The two studied populations flowered somewhat asynchronously from March to July. The tubular flowers are red, approximately 4.7 cm long and last for two days. They are protandrous and the pollen is available one day before the stigma becomes receptive. The beginning of anthesis and the opening of the stigmatic lips occur at dusk. The nectar is secreted during both the male and the female phases, with concentration of sugars greater in the male phase. The flowers are pollinated by two hummingbird...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ferdinandusa; Hummingbird; Pollination; Protandry; Rubiaceae.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000200006

Pollinator guild organization and its consequences for reproduction in three synchronopatric species of Tibouchina (Melastomataceae)
Provedor de dados: 92
Autores: Franco,Ana Maria; Goldenberg,Renato; Varassin,Isabela Galarda.
Pollinator guild organization and its consequences for reproduction in three synchronopatric species of Tibouchina (Melastomataceae). In co-flowering plant species, pollinator sharing can result in interspecific pollen transfer and fecundity reduction. Competition will be relaxed whenever there is a large amount of initial pollen supply or if each plant species occupies different habitat patches. Reproduction in Tibouchina cerastifolia (Naudin) Cogn., T. clinopodifolia (DC.) Cogn. and T. gracilis (Bonpl.) Cogn. was studied in an area of Atlantic rainforest to examine whether synchronopatry induces time partitioning among pollinator species. Eleven bee species comprised the pollinator guild. Among pollinators, there were overlaps in bee species composition...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bees; Breeding systems; Pollination; Time partitioning.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000300011

Nesting biology of three Megachile (Hymenoptera: Megachilidae) species from Eastern Amazonia, Brazil
Provedor de dados: 92
Autores: Marinho,Diego; Muniz,David B.; Azevedo,Gisele G.
Abstract Megachile Latreille is a conspicuous genus of solitary bees distributed worldwide. However, the biology of tropical species is still little known. We present data on biology of Megachile brasiliensis Data Torre, Megachile sejuncta Cockerell and Megachile stilbonotaspis Moure found in two remnants of eastern Amazonian forest in northeastern Brazil. The study was conducted using the trap-nest methodology in two different areas during four periods. We collected a total of 24 nests of M. brasiliensis, 26 of M. sejuncta and 28 of M. stilbonotaspis. The differential abundance of collected nests may reflect the population size in each sampled place. The nesting activity was concentrated mainly between July and January and species presented a multivoltine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf-cutter bee; Megachilini; Pollination; Solitary bee; Trap-nest.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262018000200097

Insects associated with syconia of Ficus citrifolia (Moraceae) in central Brazil
Provedor de dados: 92
Autores: Costa,Priscila Canesqui da; Graciolli,Gustavo.
Insects associated with syconia of Ficus citrifolia in central Brazil. Fig trees present a diverse interaction with different groups of organisms. The inflorescence, or syconium, has characteristics that form a microenvironment in which interactions occur between fig trees and invertebrates. This study aimed to identify the insect fauna associated with the figs of Ficus citrifolia and to quantitatively describe the distribution pattern of the insects in the syconium, in an urban area in central Brazil. The syconia were used by 12 species of insects. Our results showed that the insects found on Ficus citrifolia presented a pattern of occurrence that depends on the composition of species found within each syconium.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agaonidae; Fig wasp; Micro-hymenopteran; Plant-insect interaction; Pollination.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000400026

Pollen storages in nests of bees of the genera Partamona, Scaura and Trigona (Hymenoptera, Apidae)
Provedor de dados: 92
Autores: Rech,André Rodrigo; Absy,Maria Lúcia.
Bees and angiosperms established a mutualistic relationship along the evolutionary time. The aim of this study is to contribute for the understanding of this relation analyzing pollen stored by stingless bees colonies distributed along the Rio Negro. Fourteen species of Meliponini from the genera Partamona, Scaura, and Trigona were studied with regard to the content of pollen pots. The pollen material was removed from the pollen pots, homogenized, and prepared according to the usual acetolysis technique. The overlap of the trophic niche and the grouping of species by similarity of niches was calculated. The identification revealed 78 pollen types belonging to 36 families, being 37 types attractive and 16 considered as promoters of a temporary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollination; Pollinic resource; Stingless bee.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000300009

On the first tachinid fly (Diptera, Tachinidae) carrying Asclepiadoideae pollinaria in the Neotropical Region
Provedor de dados: 92
Autores: Nihei,Silvio Shigueo; Schwarz,Elizabeth de Araujo.
On the first tachinid fly (Diptera, Tachinidae) carrying Asclepiadoideae pollinaria in the Neotropical Region. This paper reports the first Neotropical Tachinidae species possibly associated to pollination of Asclepiadoideae: a female of Euacaulona sumichrasti Townsend, 1908 (Diptera, Tachinidae, Phasiinae, Trichopodini) carrying pollinaria of Gonolobus parviflorus Decne., 1844 (Apocynaceae, Asclepiadoideae, Asclepiadeae: Gonolobinae) attached to its proboscis. The fly specimen was collected in Paraguay, Departamento Canindeyú. The pollinarium is illustrated and described herein. This represents the first anthophilous record to G. parviflorus and to the genus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthophily; Apocynaceae-Asclepiadoideae; Euacaulona; Gonolobus; Pollination; Trichopodini.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000300021

Floral biology of Stachytarpheta maximiliani Scham. (Verbenaceae) and its floral visitors
Provedor de dados: 92
Autores: Barbola,Ivana de Freitas; Laroca,Sebastião; Almeida,Maria Christina de; Nascimento,Elynton Alves do.
This study describes the reproductive system of Stachytarpheta maximiliani (Verbenaceae), including its floral biology, nectar and pollen availability and insect foraging patterns, identifying whose species act as pollinators. It was carried out in a Brazilian Atlantic rain forest site. Observations on the pollination biology of the Verbenaceae S. maximiliani indicate that their flowering period extends from September through May. Anthesis occurs from 5:30 a.m. to 5:00 p.m. and nectar and pollen are available during all the anthesis. Many species of beetles, hemipterans, flies, wasps, bees and butterflies visit their flowers, but bees and butterflies are the most frequent visitors. The flowers are generally small, gathered in dense showy inflorescences. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apoidea; Floral ecology; Lepidoptera; Pollination.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262006000400010

METHOD FOR OVERCOMING THE PASSION FRUIT SELF-INCOMPATIBILITY
Provedor de dados: 94
Autores: LIRA JÚNIOR,JOSÉ SEVERINO DE; BRUCKNER,CLÁUDIO HORST; CARNEIRO,PEDRO CRESCÊNCIO SOUZA.
ABSTRACT  The methodology of self-pollination of passion fruit flowers at anthesis after stigma excision was proposed. This method was compared with self-pollination procedures at anthesis and at the stage of flower bud. Two genotypes (M7 and N9), propagated by cuttings were studied. Self-pollinations were performed at 1 pm, 1 pm and 5 pm or 5 pm. Fruit set (%), fruit mass (g), pulp mass (g), pulp/fruit ratio and seed number per fruit were evaluated and compared to fruits derived from M7 x N9 and N9 x M7 crosses. No fruit set was obtained from self-pollination at anthesis, which confirms the self-incompatibility of both genotypes. Self-pollination after stigma excision was the best procedure, reaching average fruit set of 73.61 % (13 hours) and 81.94 %...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Passiflora edulis; Pollination; Selfing; Endogamous progenies.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400804

BIOLOGY OF POLLINATION OF Citrus sinensis VARIETY ‘PERA RIO’
Provedor de dados: 94
Autores: RIBEIRO,GENEROSA SOUSA; ALVES,ELOI MACHADO; CARVALHO,CARLOS ALFREDO LOPES DE.
ABSTRACT  Aspects related to the floral biology of Citrus sinensis ‘Pera Rio’ variety were studied in the present work aiming to obtain information about the pollination ecology in the local agriculture. Studies of flowering, anthesis, pollen / ovule ratio, stigmatic receptivity, pollen viability, nectar characterization and floral visitors were carried out. From the data studied, the following information was obtained: C. sinensis variety ‘Pera Rio’ flourishes in two annual periods (dry and rainy), the anthesis occurs from 9:00 AM with duration of 24 hours, during which period stigma receptivity, pollen viability and nectar secretion are highly significant, demonstrating that the species also possesses characteristics of allogenic plants. Apis mellifera...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apoidea; Citricultura; Pollination; Bee population; Orange.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000200201

Floral and reproductive biology of Matisia cordata (fam: malvaceae)
Provedor de dados: 94
Autores: Castro,Mariluz Aguilar; Ramírez,Daily Gómez; Osorio,Verónica Álvarez; Ruiz,Sandra Muriel.
Abstract  In Colombia there is a large diversity of promising fruit trees, one of them is Matisia cordata. Sapoti species is appreciated by the consumers, although it is produced in small volumes by traditional productors. The objective of this research is to describe the floral and reproductive biology of sapoti, including floral visitors that act as biotic pollination agents. The study was conducted in two farms, between February/2016 and July/2017. In the first farm, floral buds were marked to follow the stages until fruit formation, pollination mechanism was studied, and floral visitors were collected for identification. In the second farm, flowers were marked to measure the floral nectar production. The duration from floral bud to ripe fruit was 269...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nectar; Pollination; Phenology; Promissory fruit; Sapoti.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452021000200201

Evolutionary steps in the reproductive biology of Annonaceae
Provedor de dados: 94
Autores: Gottsberger,Gerhard.
Flowers of Annonaceae are characterized by fleshy petals, many stamens with hard connective shields and numerous carpels with sessile stigmas often covered by sticky secretions. The petals of many representatives during anthesis form a closed pollination chamber. Protogynous dichogamy with strong scent emissions especially during the pistillate stage is a character of nearly all species. Scent emissions can be enhanced by thermogenesis. The prevailing reproductive system in the family seems to be self-compatibility. The basal genus Anaxagorea besides exhibiting several ancestral morphological characters has also many characters which reappear in other genera. Strong fruit-like scents consisting of fruit-esters and alcohols mainly attract small...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floral biology; Pollination; Cantharophily; Dichogamy.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452014000500004

The rate of visitation by Amazilia fimbriata (Apodiformes: Trochilidae) influences seed production in Tillandsia stricta (Bromeliaceae)
Provedor de dados: 103
Autores: Missagia,Caio C.C.; Alves,Maria Alice S.
Legitimate flowers visitors pollinate the flower during the visit and thus influence the production of fruits and seeds. We tested whether the visitation rate of potential pollinators is associated with the amount of seeds per fruit produced by the self-compatible bromeliad Tillandsia stricta (Bromeliaceae). We determined whether hummingbirds are legitimate visitors by testing for a correlation between visits and pollination (seed production) at the Guapiaçú Ecological Reserve (Reserva Ecológica de Guapiaçú), state of Rio de Janeiro. We tested 30 flowers, five of which were also monitored to test the possibility of spontaneous self-pollination. The remaining 25 flowers were exposed to floral visitors. Twenty-two flowers formed fruits and seeds, from which...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Atlantic forest; Hummingbird; Pollination; Self-compatibility.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000300260

Flower and fruit production and insect pollination of the endangered Chilean tree, Gomortega keule in native forest, exotic pine plantation and agricultural environments
Provedor de dados: 97
Autores: LANDER,TONYA A; HARRIS,STEPHEN A; BOSHIER,DAVID H.
This study was undertaken to discover whether patterns of flower and fruit production for Gomortega keule, an endangered Chilean tree, differ between exotic pine plantation, agricultural and native forest environments. A pilot study was also undertaken to identify the primary pollinators of G. keule. Although similar proportions of G. keule trees flowered in the agricultural and native forest áreas, more trees in the agricultural sites produced fruit compared to trees in the native forest sites. Flowering and fruiting of G. keule was extremely rare in the exotic pine plantations. Our data show that G. keule flowers are predominantly visited by syrphid flies in March-April, and that syrphids carry a greater proportion of G. keule pollen than the other...
Tipo: Journal article
Palavras-chave: Chile; Gomortega; Landuse; Pollination; Syrphid.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000300007

Reproductive consequences of flower damage in two contrasting habitats: The case of Viola portalesia (Violaceae) in Chile
Provedor de dados: 97
Autores: ESPINOZA,CLAUDIA L; MURÚA,MAUREEN; BUSTAMANTE,RAMIRO O; MARÍN,VÍCTOR H; MEDEL,RODRIGO.
The indirect impact of flower herbivory on plant reproduction depends on the pollination environment, particularly on the presence or absence of pollinator species with the ability to discriminate damaged from undamaged flowers. The change in pollinator assemblages, due to habitat modification, may modify the impact of flower herbivory on plant reproductive success. In this work, we evaluate the effect of flower herbivory on the seed production of Viola portalesia (Gay) in two contrasting environments, a native and low-disturbed habitat and an extensively transformed habitat characterized by Pinus radiata plantations. Even though the two habitats differed substantially in the composition of pollinator assemblages and visitation rate, the flower damage...
Tipo: Journal article
Palavras-chave: Flower herbivory; Habitat loss; Maulino forest; Pinus radiata; Pollination.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000400012

Boric acid in germination of pollen grains and fruit set of peach cultivars in subtropical region
Provedor de dados: 124
Autores: Souza,Filipe Bittencourt Machado de; Pio,Rafael; Tadeu,Maraísa Hellen; Zambon,Carolina Ruiz; Gregory,L. Reighard.
ABSTRACT The pollination and fertilization process directly affects the crop yield of peach. Previous studies have shown that some cultivars lack consistent cropping (yield variation) in subtropical regions. The application of boric acid at flowering can minimize this problem. This study quantified the germination of pollen grains and fruit set on 18 cultivars of peach in a subtropical region when treated with boric acid at bud. The initial spray treatments were three concentrations of boric acid (400 mgL-1, 800 mgL-1 and 1,200 mgL-1) plus a control treatment of water. Treatments were sprayed on the shoots when the flower buds were flower bud swelling on early maturing cultivars Aurora 2 and Doçura 2. There is a cultivar difference where 'Aurora 2' had a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica; Pollination; Fertilization; Boron.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000300496

THE IMPACT OF USING LEAFCUTTING BEES (Megachilidae hymenoptera) WITH DIFFERENT FERTILIZATION TREATMENTS ON ALFALFA SEED PRODUCTION
Provedor de dados: 127
Autores: Shebl,Mohamed A; Kamel,Solimán M; Abu Hashesh,Talaat A; Osman,Mohamed A.
Alfalfa, Medicago sativa (L, 1753), one of the most important forage crops in the world; leafcutting bees which belong to Family Megachilidae are very promising pollinator of Alfalfa is USA and Canada. Different lefacutting natural nests were discovered in Ismailia (east part of Egypt). Artificial polystyrene foam nests were used for bees nesting; it is easy to manage and handle it in alfalfa fields. Different fertilization treatments were carried out for testing their impact on alfalfa seed production in the presence of artificial nests. The seed production depends basically on the pollination of leafcutting bees (tripping mechanism) more than fertilization treatment; we found no significant differences between different fertilization treatments. It is...
Tipo: Journal article
Palavras-chave: Pollination; Alfalfa; Seed Production; Leafcutting bees.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000200005

Honey bee as an effective pollinating agent of pumpkin
Provedor de dados: 63
Autores: Nicodemo,Daniel; Couto,Regina Helena Nogueira; Malheiros,Euclides Braga; De Jong,David.
The production of fruits and seeds of many crops is increased when bees visit their flowers pollinating them. The aim of this research was to study the pollination of pumpkins (Cucurbita maxima Duch. var. Exposição), to determine the diversity of insects visiting its flowers, the time and type of provision obtained and the effect of the visits on fruit set, fruit size and weight, and number of seeds. Apis mellifera L. accounted for 73.4% of the visits made by bees, collecting pollen during 34.5 s per flower and nectar in 43.9 s and 29.3 s from female and male flowers, respectively. Trigona spinipes (Fabr.) collected only nectar, during a mean time of 60.5 s per flower, and represented 26.6% of the visits by bees. Diabrotica speciosa (Germ.) only fed on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucurbita maxima; Pollination; Honey bee.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000400007

Interspecific xenia and metaxenia in seeds and fruits of tomato
Provedor de dados: 63
Autores: Piotto,Fernando Angelo; Batagin-Piotto,Katherine Derlene; Almeida,Marcílio de; Oliveira,Giancarlo Conde Xavier.
Xenia, the transmission of traits from the pollinizer to the female's tissues, is a phenomenon hitherto unknown in tomatoes. Here, we describe xenia effects on the seeds and fruits of Solanum lycopersicum, the tomato, elicited by S. galapagense. The wild tomatoes, such as S. galapagense, have highly pilose fruit surface and minute seeds, unlike the domesticated species. Crossings between S. galapagense (pollinizer) and two large-seeded, glabrous cultivars of S. lycopersicum (females) tested the former's ability to raise the trichome density and trichome-to-1000-cell ratio and to reduce the seed weight in the latter's fruits. Selfed fruits of the two cultivars, Micro-Tom and Pusa Ruby, were compared to the crossed fruits. The pollen of S. galapagense was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hormones; Pollination; Microscopy; Wild relative.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000200007

ศึกษาการเกิดข้าวเจ้าปนในข้าวเหนียวพันธุ์ กข6
Provedor de dados: 106
Autores: Orasa Wongkasem; Prathai Kenlueam; Sunanta Wongkalasin; Ranee Kenlueam.
Contamination of non-glutinous rice in glutinous rice crop leads to undesirable cooking quality. An experiment was conducted to determine causes of non- glutinous seeds occurrence in panicles of a glutinous variety; RD6. This study was carried out by planting a single seedling in a pot. Three treatments were applied to the plants at flowering stage; i.e. 1) cover the panicles with glassine bags, 2) emasculation without glassin bag covering and 3) no emasculation and without glassin bag covering.  Ten pots were placed within the Khao Dawk Mali 105 production field. Seed set percentage and starch type identification were analyzed. The results showed that there was no occurrence of non-glutinous seeds in treatments 1 and 3. Seed set was found in  5 panicles...
Tipo: PhysicalObject
Palavras-chave: RD6; Non-glutinous rice; Pollination; Cross pollination; ข้าวเจ้า; พันธุ์กข6; การผสมเกสร; การผสมข้าม; การผลิตเมล็ดพันธุ์; การติดเมล็ด.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5453

Territorial-like defensive behavior of floral resources by Heliconius ethilla narcaea Godart over H. sara apseudes (Hübner) (Lepidoptera, Nymphalidae, Heliconiinae)
Provedor de dados: 104
Autores: Rocha,Carlos Frederico Duarte da; Duarte,Marcelo.
The use of nectar and pollen of a bromeliad by two heliconiine butterflies, Heliconius ethilla narcaea Godart, 1819 and H. sara apseudes (Hübner, [1813]) (Lepidoptera, Nymphalidae, Heliconiinae), is herein reported. Observations were made during a pollination study of Aechmea gracilis Lindman (Bromeliaceae, Bromelioidea) in a second-growth forest of the village Vila Dois Rios, Ilha Grande, Rio de Janeiro State, southeastern Brazil. Field observations showed that H. ethilla can be more aggressive than H. sara in exploiting A. gracilis floral resources. Temporal differences in the use of these resources were also observed: H. sara remained comparatively less time on flowers than H. ethilla.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lepidoptera; Heliconius; Pollination; Aechmea gracilis; Competition; Home range.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000500027

Visitantes florais de Erythrina speciosa Andr. (Leguminosae)
Provedor de dados: 104
Autores: Vitali-Veiga,Maria J.; Machado,Vera L.L.
Inspite of Etythrina species exhibit morphologic attributes for adaptation to pollination by nectarivorous birds mentioned in the literature, E. speciosa is pollinated by lots of bees (Apinae and Meliponinae) which show a great urban occurrence. Systems of E. speciosa floral reproduction, fenology, diversity, frequency and constancy of insects visiting at different hours and flowering periods were studied. E. speciosa is Biocompatible, but xenogamy is the predominant system of reproduction. A large diversity of insects visiting the inflorescences was observed, with predominance of bees. The bee species showed a higher frequency: Apis mellifera Linnaeus, 1758 (45,0 %), Trigona spinipes (Fabricius, 1793) (28,6%), Trigona hyalinata (Lepeletier, 1836) (12,2 %)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollination; Erythrina speciosa; Bee; Fenology; Floral visitors.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000200007

Visitantes florais de Lagerstroemia speciosa Pers: (Lythraceae)
Provedor de dados: 104
Autores: Vitali-Veiga,Maria de Jesus; Dutra,João Cloves Stanzani; Machado,Vera Lígia Letízio.
Studies were carried out with Lagerstroemia speciosa Pers. on floral reproductive systems, diversity and constancy of visiting insects at different hours of day, the behaviour of these insects at the flowers and the influence of these environmental factors in relation to their visits. The fenology, anthesis and others particularity of this vegetal species was studied. A great diversity of insects was verified visiting the flowers with the predominance of bees. The most frequent and constant species encountered were: Nannotrigona testaceicornis (Lepeletier, 1836) (40,2%), Tetragonisca angustula (Latreille, 1811) (16,9%), Apis mellifera Linnaeus, 1758 (11,8%), Plebeia droryana (Friese, 1900) (9,1 %) e Exomalopsis fulvofasciata (Smith, 1879) (8,5%). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bee; Flower visitors; Phenology; Pollination; Lagerstroemia speciosa.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000200006

Entomofauna visitante de Belamcanda chinensis (L.) DC (Iridaceae) durante o período de floração
Provedor de dados: 104
Autores: Vitali,Maria de Jesus; Dutra,João Clovis Stanzani; Machado,Vera Lígia Letízio.
A study of the reproductive biology of B. chinensis (L.) DC. (Iridaceae) was realized comprising floral biology and breeding systems. The floral biology studies included analyses of nectar production, occurence of osmophores, corolla pigments, ultraviolet reflexion and absortion patterns, viability of pollen, pollinators and flower visitors. The breeding systems were studied taking into account the results of manual pollinators tests. B. chinensis is self-compatible bul cross-pollination is more frequent. The effective pollinators are Plebeia droryana (Friese, 1906) (45,7%), Trigona spinipes (Fabricius, 1793) (27,3%), Tetragonisca angustula (Latreille, 1811) (9,3%). Others insects visitors are considered nectar and pollen thieves. The flowering begins...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Belamcanda chinensis; Pollination; Insect visitors; Floral biology; Reproductive biology.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000200003

A new anthophilic species of Drosophila Fallén belonging to the bromeliae group of species (Diptera, Drosophilidae)
Provedor de dados: 104
Autores: Silva,Alessandra de A. R. da; Martins,Marlúcia B.
Drosophila speciosa sp. nov. from: Belém, Pará, Brazil, is described and morphologically compared to a closely related species, D. aguape Val &amp;amp; Marques, 1996. Adult specimens of D. speciosa sp. nov. were collected while visiting T. speciosum Willd. ex Spreng. flowers in EMBRAPA's Theobroma Linnaeus germoplasm collections (113 individuals) in Belém and in Caxiuanã Scientific Station, in Melgaço, Pará, Brazil (four individuals). Emergent were obtained from T. speciosum flowers in both localities being four adults in Caxiuanã and 532 in EMBRAPA. Other eight emergencies were registered from Passiflora edulis Sims flowers in Curuçá, Pará, Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthophilic flies; Drosophilids; Pollination; Theobroma speciosum.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000300003

Pollination of Habenaria pleiophylla Hoehne &amp;amp; Schlechter (Orchidaceae) by Heliconius erato phyllis Fabricius (Lepidoptera, Nymphalidae)
Provedor de dados: 104
Autores: Moreira,Gilson R.P; Correa,Claudine A; Mugrabi-Oliveira,Elna.
For the first time the pollination of a poorly known, terrestrial orchid, Habenaria pleiophylla Hoehne &amp;amp; Schlechter, 1921 (Orchidaceae) by a passion vine butterfly, Heliconius erato phyllis (Fabricius, 1775) (Lepidoptera, Nymphalidae) is reported. Number of pollinia-carrying individuals was determined on a population of H. erato phyllis in Horto Florestal Barba Negra, Barra do Ribeiro County, Rio Grande do Sul State. The pollination mechanism was described under laboratory conditions, in association with the butterfly feeding habit and the orchid flower morphology. Habenaria pleiophylla pollinia are cemented during nectar feeding on the ventral portion of the compound eyes near H. erato phyllis proboscis base. The pollinia are transferred to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nymphalidae; Heliconius; Orchidaceae; Habenaria; Pollination.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000300027

Flowering phenology of Mouriri guianensis (Melastomataceae) and its interaction with the crepuscular bee Megalopta amoena (Halictidae) in the restinga of Lençóis Maranhenses National Park, Brazil
Provedor de dados: 36
Autores: OLIVEIRA,Fabiana dos Santos; RIBEIRO,Monique Hellen Martins; NUNEZ,Cecilia Veronica; ALBUQUERQUE,Patricia Maia Correia de.
ABSTRACT Mouriri guianensis is a Brazilian endemic plant species distributed throughout the Amazon forest, Caatinga, Mata Atlântica and Cerrado domains, extending northward into Venezuela. The aim of this study was to describe the flowering phenology, floral biology and visitors associated with M. guianensis, highlighting the crepuscular bee species Megalopta amoena. Mouriri guianensis flowers from September to March. The flowering, the details of floral biology and the activities of floral visitors were observed for ten individual plants in December 2013, January-March 2014, September-December 2014 and January-March 2015. The flowering peaks occurred in December 2013 and in November-December 2014. Bees were collected in January and February 2015. A total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollination; Insect-plant interaction; Floral oil; Crepuscular foraging.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000300281

VASCULAR EPIPHYTES: THE UGLY DUCKLING OF PHENOLOGICAL STUDIES
Provedor de dados: 37
Autores: RAMÍREZ-MARTÍNEZ,Adriana; MONDRAGÓN,Demetria; RIVERA-GARCÍA,Raúl.
ABSTRACT The phenology of vascular epiphytes, which account for about 10 % of the world's flowering plants and perform important ecological functions, has been just partially explored. Since phenology is a key tool for the management and conservation of species, the objective of this review was to synthesize the information published so far about the phenology of vascular epiphytes, detect gaps of knowledge, and suggest future lines of investigation to understand the underlying mechanisms. We conducted an online search for articles in Google Scholar and in the ISI Web of Science database from 1800 to 2020, with different combinations of keywords. 107 studies addressing the phenology of different holoepiphyte species were found; 88 % of the studies were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental factors; Dispersion; Pollination; Reproductive biology; Seasonal development; Vegetative biology.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2021000200247

Pollination biology of Paliavana tenuiflora (Gesneriaceae: Sinningeae) in Northeastern Brazil
Provedor de dados: 39
Autores: Ferreira,Patrícia Alves; Viana,Blandina Felipe.
In this study the floral biology, breeding system, visitors and pollinators of Paliavana tenuiflora were analyzed in campos rupestres in the Chapada Diamantina, Mucugê, Bahia, Brazil. Paliavana tenuiflora is a shrub with blue-violet, bell-shaped flowers, with anthesis at 11:00 h; the flowers last about six days. Large amounts of nectar are produced (volume average 15.5µL, concentration 22.7% and sugar content 5.0 mg mL-1). The amount of nectar is not related to the time of day, but concentration varied with volume. The species is self-compatible, but fruit set depends on pollinators. Although nectar is available by day and night, flowers of P. tenuiflora fit the bee pollination syndrome, and are actually pollinated by Bombusbrevivillus. However, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campos rupestres; Pollination; Breeding system; Bombus brevivillus; Phaethornis pretrei; Bahia.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000400012

Sexual ratio and floral biology of the dioecious Neea theifera Oerst. (Nyctaginaceae) in a cerrado rupestre of central Brazil
Provedor de dados: 39
Autores: Amorim,Felipe Wanderley; Mendes-Rodrigues,Clesnan; Maruyama,Pietro Kiyoshi; Oliveira,Paulo Eugênio.
Dioecy is characterized by a complete separation of sexual functions on male and female plants. It has evolved many times in flowering plants and is widespread among distinct Angiosperm families. It is viewed as a reproductive strategy to reduce endogamy, and to promote optimal resource allocation between male and female sexual functions. Neea theifera is a common species in Cerrado, neotropical savannas in Brazil, but information regarding its reproductive biology is still incomplete. In order to investigate how environmental conditions possibly affect this dioecious species, we studied its floral biology, sex ratio and spatial distribution of sexual morphs along a soil-altitudinal gradient. The sex ratio did not significantly deviate from the expected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Altitudinal gradient; Dioecy; Neotropical savanna; Sexual structure; Pollination.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000400006

Floral biology and pollination in Brazil: history and possibilities
Provedor de dados: 39
Autores: Oliveira,Paulo Eugênio; Rech,André Rodrigo.
ABSTRACT Pollination research in Brazil virtually started with Fritz Muller, whose insights supported Darwin's evolutionary theory. Pollination systems of Brazilian plants were studied mainly by travelling researchers until early last century when native or resident geneticists began to use floral biology information to deal with crop acclimatization and breeding, later applying similar experiments and techniques to investigate native plants. Bee geneticists studied common pollinators of crops, such as coffee and Citrus, and even the introduction of feral African honeybees, despite their associated problems, stimulated pollination research. Geneticists attracted Dobzhansky to Brazil, where his research on tree distribution in the Brazilian Amazon...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding system; Ecological services; Floral biology; Plant conservation; Plant-animal interactions; Pollination.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000300321

The reproductive biology of the early-divergent genus Anaxagorea (Annonaceae), and its significance for the evolutionary development of the family
Provedor de dados: 39
Autores: Gottsberger,Gerhard.
ABSTRACT Data of six studied Neotropical Anaxagorea species are analyzed and discussed with respect to the population structure, flowering phenology, flower morphology, anthesis, scent emission, thermogenesis, floral visitors, breeding system, fruit-set and seed dispersal. The probably reason for the patchy distribution of small populations of Anaxagorea species within lowland tropical forests is given. A novel explanation of the functional significance of ruminate endosperm is presented. Flowering of the species follows either the annual or the continuous flowering pattern. All studied species have diurnal, two-day lasting, protogynous anthesis; several species have thermogenic flowers. Self-compatibility appears to be the prevailing reproductive system...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anaxagorea; Pollination; Reproductive biology; Radiation and diversification of Annonaceae; Reproductive systems; Ruminate endosperm; Seed dispersal.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000200313

Floral biology and a pollinator effectiveness test of the diurnal floral visitors of Tabernaemontana undulata Vahl. (Apocynaceae) in the understory of Amazon Rainforest, Brazil
Provedor de dados: 39
Autores: Moura,Thaysa Nogueira de; Webber,Antonio Carlos; Torres,Liliane Noemia Melo.
In this paper we examined the floral biology, per-visit effectiveness, frequency of visits and relative abundance of the diurnal floral visitor taxa of T. undulata (Apocynaceae) at two populations located in the primary forest and in a disturbed area connected to the continuous forest. Its hermaphrodite flowers show a long and narrow floral tube and introrse anthers form a cone around the apex of the style head where the pollen is deposited. The stigmatic head has three functional regions, in a complex pollination mechanism favoring cross-pollination. In the pollinator censuses conducted in the primary forest population we registered Eulaema bombiformis. In the disturbed area Euglossa sp. was responsible for visits on T. undulata fl owers. Eulaema...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central Amazonia; Eulaema bombiformis; Euglossa; Pollination.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000200014

First report of predation on floral visitors by crab spiders on Croton selowii Baill. (Euphorbiaceae)
Provedor de dados: 39
Autores: Novo,Reinaldo Rodrigo; Souza,Jefferson Thiago; Castro,Cibele Cardoso de.
In the literature it has been extensively mentioned that crab spiders (Araneae: Thomisidae) prey on floral visitors of several plant species. Here we present observations of Croton selowii Baill. (Euphorbiaceae), a monoecious species harboring individuals of crab spiders in an area of coastal vegetation of Pernambuco state, Brazil. The species is visited by several invertebrate orders, and some of them were preyed upon by the spiders, mainly Diptera species. The spiders rubbed the forelimbs within the flowers, which may constitute a strategy to camouflage these structures. Croton selowii seems to represent a suitable foraging site for the spiders, because it has a generalist pollination system (thus being visited by a wide range of invertebrate species)...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Pollination; Predation; Coastal vegetation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000200029

Floral biology and breeding system of Psychotria tenuinervis Muell. Arg. (Rubiaceae) in the Atlantic rain forest, SE Brazil
Provedor de dados: 39
Autores: Virillo,Carolina Bernucci; Ramos,Flavio Nunes; Castro,Cibele Cardoso de; Semir,João.
(Floral biology and breeding system oi Psychotria tenuinervis Muell. Arg. (Rubiaceae) in the Atlantic rain forest, SE Brazil). The aim of this study was to investigate pollination biology, floral morphometry, morph ratio and breeding system oiPsychotria tenuinervis in an area of Atlantic rain forest in southeastern Brazil. Pollination biology was studied based on focal observations and the breeding system was determined using controlled crosses; data on flower production and floral morphometry were compared between the two floral morphs. Flower production by the two floral morphs was similar, with flowers being reciprocally herkogamous, diurnal and pollinated at similar frequencies, mainly by medium-sized bees. Corolla length and diameter, as well as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Distyly; Flower; Herkogamy; Pollination.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062007000400012

Seed production and seed quality of the dune building grass Panicum racemosum Spreng
Provedor de dados: 39
Autores: Cordazzo,Cesar Vieira; Davy,Anthony John.
Seed production, pollination requirement, seed characteristics related to quality and the relationship between number and mass of seeds were examined for Panicum racemosum in three successional populations in southern Brazilian coastal dunes. The seed production was generally low and declined further between the frontal dunes and the backdunes, dropping from 4.05 seeds per panicle in the former to 1.8 seeds in the latter. However fertility (% fertile florets) did not differ among the three habitats. Plants cross-pollinated in a glasshouse showed an increase in seed production to 41.4 seeds compared to no seed production in self-pollinated plants. Caryopses varied in mass from 3.2 to 12.2 mg with a mean of 7.98 mg. A strong negative correlation was found...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Panicum racemosum; Seed production; Pollination; Seed mass; Seed number; Coastal dunes.
Ano: 1994
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061994000200004

Can plant hybridization and polyploidy lead to pollinator shift?
Provedor de dados: 39
Autores: Rezende,Luiz; Suzigan,João; Amorim,Felipe W.; Moraes,Ana Paula.
ABSTRACT Events of both hybridization and polyploidy are capable of completely restructuring the genome, modifying phenotypic traits and affecting ecological interactions. For plants, these changes may affect floral traits that are important for interactions with pollinators, which could lead to shifts in pollinator behavior and taxa between hybrids/polyploids and parental/diploid species. Such pollinator shifts have great ecological and evolutionary relevance since they play a key role in the diversification of angiosperms. There is a growing number of studies that explicitly address the relationship between plant hybridization/polyploidy and pollinator shifts. However, questions remain about how often hybridization and polyploidy lead to pollinator...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allopolyploidy; Autopolyploidy; Floral traits; Hybrid species; Homoploid; Pollination.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000200229

Reproductive biology of Davilla kunthii A. St-Hil. (Dilleniaceae) in Central Amazonia
Provedor de dados: 39
Autores: Rech,André Rodrigo; Manente-Balestieri,Fatima Cristina de Lazari; Absy,Maria Lúcia.
This survey aimed at describing the interactions of floral visitors and Davilla kunthii A. St.-Hil. as well as characteristics of its reproductive biology in Itacoatiara, state of Amazonas, Brazil. Tests of the breeding system were performed. The guild of visitors was described according to richness, abundance, relative frequency and constancy. The breeding system tests indicated that D. kunthii is self-compatible. The pollination system was characterized as generalist, with 39 visitor species, from three different orders. Bees were the main group of pollinators, thus some behavioural aspects were described. Th e period of highest foraging activity was between 7 and 10 am. Some species presented agonistic and monopolistic behaviour. Given the behaviour and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bee; Pollinator behaviour; Vine; Pollination.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000200024

Nectar dynamics and reproductive biology of Passiflora actinia Hook. (Passifloraceae) in Araucaria Forest
Provedor de dados: 39
Autores: Varassin,Isabela Galarda; Baggio,Ana Carolina; Guimarães,Paulo César; Prazeres,Luiz Carlos; Cervi,Armando Carlos; Bueno,Raquel de Oliveira.
ABSTRACT Nectar production has an important role in pollinator attraction and successful fruit production in many self-incompatible angiosperm groups. The reproductive biology of Passiflora actinia was studied here and related to nectar dynamics. Passiflora actinia presented a temporal segregation of male and female functions at the beginning of anthesis. Due to the movements of floral verticils, the anthers were positioned in a way that favors pollination two hours before the stigmas reached the same position. The nectary consisted of an epidermis with stomata and a parenchyma rich in starch, which was hydrolyzed during anthesis. The nectary organization is probably associated with the continuous production of nectar during anthesis as well as with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bees; Nectar; Nectary; Pollination; Xylocopa.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000300426

Pollen morphology and study of the visitors (Hymenoptera, Apidae) of Solanum stramoniifolium Jacq. (Solanaceae) in Central Amazon
Provedor de dados: 39
Autores: Silva,Alexandre Coletto da; Kinupp,Valdely Ferreira; Absy,Maria Lucia; Kerr,Warwick Estevam.
The Solanaceae family has a wide distribution, mainly in the tropical and subtropical areas of South America. Solanum L. is one of the most important genera of the family with approximately 1,200 species. The objective of this work was to study the floral biology, pollen morphology as well as to investigate the bee visitors of S. stramoniifolium. Preliminary data indicate the presence of one species of stinging bee and four species of stingless bees as visitors to S. stramoniifolium. The pollen of S. stramoniifolium is tricolporate and psilate or without ornamentation. In a word, S. stramoniifolium constitutes a potential source of pollen for different species of bees with and without sting, providing an interesting field for germination studies,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum stramoniifolium; Bees; Pollen; Pollination; Acetolysis.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062004000300022

Polinização por Apis mellifera em soja transgênica [Glycine max (L.) Merrill] Roundup Ready&amp;trade; cv. BRS 245 RR e convencional cv. BRS 133 - DOI: 10.4025/actasciagron.v30i2.1787
Provedor de dados: 1
Autores: Chiari, Wainer César; UEM; Toledo, Vagner de Alencar Arnaut de; Departamento de Zootecnia, Universidade Estadual de Maringá; Hoffmann-Campo, Clara Beatriz; Empresa Brasileira de Pesquisa Agropecuaria - Londrina; Rúvolo-Takasusuki, Maria Claudia Colla; UEM; Toledo, Tiago Cleyton Simões de Oliveira Arnaut de; UEM; Lopes, Tais de Sousa; UEM.
O objetivo deste estudo foi verificar a influência de Apis mellifera na produção de grãos e qualidade de sementes da soja transgênica Glycine max (L.) Merrill Roundup Ready&amp;trade; e convencional. A soja transgênica foi plantada intercalada com a convencional, em 18 parcelas, em três tratamentos: gaiolas com abelhas A. mellifera, gaiolas sem abelhas e áreas descobertas, com livre visitação de insetos. Na soja transgênica, em três parcelas de cada tratamento, foi aplicado glifosato, 30 dias após a emergência. Os parâmetros analisados foram: produção de grãos; número de vagens por planta; peso de 100 sementes e porcentagem de germinação das sementes. Não houve diferença entre as cultivares, entretanto a produção de 2.757,40 kg há-1 obtida na área coberta...
Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal soja transgênica; Polinização; Apis mellifera; Glycine max; Roundup Ready™ 5.01.03.05-9 Melhoramento Vegetal Transgenic soybean; Pollination; Apis mellifera; Glycine max; Roundup Ready.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1787

Influência de abelhas africanizadas na concentração de açúcares no néctar de soja (Glycine max L. Merrill) var. Codetec 207 - doi: 10.4025/actascianimsci.v32i2.7930
Provedor de dados: 2
Autores: Alves, Eloi Machado; Universidade Estadual de Maringá; Toledo, Vagner de Alencar Arnaut de; UEM; Oliveira, Arildo José Braz de; Universidade Estadual de Maringá; Sereia, Maria Josiane; Universidade Tecnológica Federal do Paraná; Neves, Carolina Antunes; Copebrás; Ruvolo-Takasusuki, Maria Claudia Colla; Universidade Estadual de Maringá.
O objetivo foi avaliar a concentração de açúcares no néctar de soja (Glycine max L. Merrill) em áreas com ou sem a presença de abelhas Apis mellifera L. Foi utilizada a variedade Coodetec 207 em quatro tratamentos: área de 24 m2 coberta com colônia de abelhas africanizadas em seu interior; área semicoberta com livre acesso para insetos visitantes; área livre e área coberta sem abelhas. As flores foram coletadas durante três dias, a cada 2h. e a concentração dos açúcares totais por flor foi determinada por espectrofotometria. A área coberta com abelha apresentou maior concentração de açúcares totais em relação à área coberta sem abelhas e livre, contudo, a concentração de açúcares totais na área livre não diferiu da concentração observada na área coberta...
Tipo: Pesquisa de campo
Palavras-chave: 5.04.05.00-4 concentração de açúcares; Néctar; Polinização; Soja Produção Animal sugar concentration; Nectar; Pollination; Soybean.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/7930

Comportamento de forrageamento de abelhas e outros insetos nas panículas da mangueira (Mangifera indica L.) e produção de frutos - DOI: 10.4025/actascianimsci.v31i3.6678
Provedor de dados: 2
Autores: Souza, Darclet Terezinha Malerbo; Centro Universitário Moura Lacerda; Halak, André Luis; Centro Universitário Moura Lacerda.
O experimento foi conduzido com o objetivo de se estudar a frequência, constância, o tipo de coleta (néctar e/ou pólen) e comportamento de forrageamento dos insetos visitantes às flores da mangueira (Mangifera indica L.) e seu efeito na produção de frutos. A frequência e o tipo de coleta dos insetos nas flores foram obtidos durante os primeiros 10 min. em cada horário, das 7 às 18h, com três repetições em cada ano. O teste de polinização foi realizado, utilizando-se dois tratamentos: panículas cobertas para se impedir a visita dos insetos e panículas descobertas (controle) nas quais foi permitida a visita dos insetos. Os insetos da ordem Diptera, a abelha Tetragonisca angustula e o coleóptero Diabrotica speciosa foram espécies constantes nas panículas da...
Tipo: Pesquisa experimental
Palavras-chave: 5.04.01.00-9 manga; Polinização; Visitantes florais Ecologia dos Animais Domésticos e Etologia mango; Pollination; Floral visitors.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/6678

Pollen resources partitioning of stingless bees (Hymenoptera: Apidae) from the southern Atlantic forest
Provedor de dados: 3
Autores: Rodrigues, Carina da Silva; Ferasso, Debora Cristina; Mossi, Altemir José; Coelho, Geraldo Ceni.
Meliponinae eusocial bees are among the most important pollinators in the Neotropics and their beekeeping has been growing as both recreational and economic activity. Information on the pollen preferences and niche overlap among species coexisting in the same location is still scarce. This study focused on the use of pollen resources by three native species of Meliponinae in the Atlantic Forest, Melipona quadrifasciata quadrifasciata (Lepeletier 1836), Scaptotrigona depilis (Moure 1942), and Tetragonisca angustula (Latreille 1811), at two different sites. The use of pollen resources was evaluated from reserves inside hives collected monthly between February 2015 and January 2016. It was also estimated the Mean Minimal Distance (Dm) traveled by the bees to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Niche overlap meliponiculture pollination Apidae niche overlap; Pollination; Meliponiculture; Apidae.
Ano: 2020
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/48714

Floral, reproductive and pollinators biology of Myrcianthes pungens (Berg) Legrand, neglected species
Provedor de dados: 3
Autores: Guollo, Karina; Wagner Junior, Américo; Kosera Neto, Carlos; Dallago, Adriana; Svidzinski, Rayana Stival; Radaelli, Juliana Cristina.
Studies related to floral biology are essential for the understanding of the ecological relations between different species, and the beginning of breeding programs. In this way, the aim of the study was to elucidate aspects of floral and reproductive biology and floral visitors of this species. Information about floral morphology and morphometry, anthesis, nectaries and pollinator attractive structures, characterization of floral visitors, receptivity of androcytic stigma and maturation, in vitro pollen storage and germination, and characterization of the reproductive system were obtained. The guabiju tree has hermaphrodite flowers, and the floral opening occurs mainly during the night, but also in the morning. Anthers are the main attractive structure to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.00.00-0 guabiju tree; Myrtaceae; Floral visitors; Pollination; Germination of pollen. Morfologia; Fisiologia; Botânica.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43904

Reproductive biology of Bowdichia virgilioides Kunth (Fabaceae) - doi: 10.4025/actascibiolsci.v33i4.9003
Provedor de dados: 3
Autores: Silva, Andre Luiz Gomes da; Universidade Federal do Maranhão; Chaves, Samyra Ramos; Universidade Federal do Maranhão; Brito, Jéfferson Mesquita; Universidade Federal do Maranhão.
The aim of this study was to investigate the reproductive biology of Bowdichia virgilioides in an area of Cerrado (Brazilian Savanna). The study was carried out in Chapadinha, State of Maranhão in northeastern Brazil. Bowdichia virgilioides has cornucopia flowering and annual pattern. Flowering occurred at the beginning of the dry season, between June and August; and fruiting in the middle of this season, between July and October. The anthesis of B. virgilioides is diurnal, and the main flower resource is the nectar. During the flower opening, the anthers becomes dehiscent and thus pollen grains are deposited at the stigma, promoting automatic self-pollination. The species is self-compatible and apomitic. In the study area, they were visited by nine...
Tipo: Fenologia e reprodução
Palavras-chave: Botânica - Biologia reprodutiva breeding system; Cerrado; Pollination; Reproductive success Botânica breeding system; Cerrado; Pollination; Reproductive success.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/9003

Aspects of the reproductive biology of Brassavola cebolleta Rchb.f. (Orchidaceae) - doi: 10.4025/actascibiolsci.v32i4.7148
Provedor de dados: 3
Autores: Rech, André Rodrigo; Instituto Nacional de Pesquisas da Amazônia; Rosa, Yara Brito Chaim Jardim; Universidade Federal da Grande Dourados; Manente-Balestieri, Fátima Cristina de Lazari; Universidade Federal da Grande Dourados.
This survey assessed some aspects of the reproductive biology of Brassavola cebolleta Rchb. f. (Orchidaceae) in the Municipality of Dourados, Mato Grosso do Sul State, Brazil. Floral biology, breeding systems, floral visitors and seed germination were analyzed. Differential success and fruit production rate were calculated. Pollination system indicated the pollen vector dependence and absence of pre-zygotic barriers related to self-incompatibility. Pollination occurred at night, being the potential pollen vector a Lepidoptera-Notodontidae of the genus Hemiceras. Differential success of male was 19%, female 9%, and the rate of effective fructification was 6.3%. Fruits produced after pollinator visits were larger than those generated by manual cross...
Tipo: Biologia Reprodutiva
Palavras-chave: Ciências Biológicas: Reprodução Vegetal floral biology; Fructification; Pollination; Breeding system Botânica floral biology; Fructification; Pollination; Breeding system.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7148

Reproductive Biology of Varronia curassavica Jacq. (Boraginaceae)
Provedor de dados: 42
Autores: HOELTGEBAUM,MARCIA P.; MONTAGNA,TIAGO; LANDO,ANA PAULA; PUTTKAMMER,CATARINA; ORTH,AFONSO INÁCIO; GUERRA,MIGUEL P.; REIS,MAURÍCIO S. DOS.
ABSTRACT Varronia curassavica, a subshrubby medicinal species associated with restinga in the Atlantic Forest, has been exploited by local people and the pharmaceutical industry. Indeed, restingas have experienced a continuous process of degradation, and thus, with species and ecosystem both at risk, efforts to support conservation actions are required. The present study aimed to evaluate aspects of V. curassavica reproductive biology. To accomplish this, morphological characterization was performed by monitoring flowering events. The availability of nectar and pollen, as well as the frequency and behavior of floral visitors and dispersers, was also evaluated. This species exhibits both heterostyly and protogyny. Anthesis is diurnal, and flowers last less...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dispersion; Heterostyly; Pollination; Floral resources.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100059

Plant-hummingbird interactions and temporal nectar availability in arestinga from Brazil
Provedor de dados: 42
Autores: FONSECA,LORENA C.N.; VIZENTIN-BUGONI,JEFERSON; RECH,ANDRÉ R.; ALVES,MARIA ALICE S.
ABSTRACT Hummingbirds are the most important and specialized group of pollinating birds in the Neotropics and their interactions with plants are key components to many communities. In the present study we identified the assemblage of plants visited by hummingbirds and investigated the temporal availability of floral resources in an area of restinga, sandy plain coastal vegetation associated with the Atlantic forest, in Southeastern Brazil. We recorded flower and nectar features, flowering phenology and interactions between plants and hummingbirds and estimated the amount of calories produced per hectare from June 2005 to August 2006. Ten plant species were visited by two hummingbirds,Amazilia fimbriata and Eupetomena macroura. Resource availability was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazilia fimbriata; Atlantic rainforest; Floral resources; Ornitophily; Pollination; Restinga.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502163

Reproductive phenology and sharing of floral resource among hummingbirds (Trochilidae) in inflorescences ofDahlstedtia pinnata (Benth.) Malme. (Fabaceae) in the Atlantic forest
Provedor de dados: 42
Autores: MISSAGIA,CAIO C.C.; VERÇOZA,FÁBIO C.; ALVES,MARIA ALICE S.
The purpose of this study was to investigate the reproductive phenology and sharing of floral resource (nectar) ofDahlstedtia pinnata (Benth.) Malme. (Fabaceae), endemic of Atlantic forest, among hummingbirds. For the phenology, we looked at the presence of reproductive structures in the plants, and for floral resource sharing, the frequency of potential pollinators and foraging behaviors were examined. This study was conducted in Pedra Branca State Park, in state of Rio de Janeiro, in a dense ombrophilous forest, between August 2010 and August 2011. Flowering occurred between December 2010 and March 2011, and fruiting between April and June 2011. Hummingbirds' foraging schedules differed significantly, with legitimate visits to the flowers occurring in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floral theft; Foraging behavior; Ornithophily; Pollination.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401693

Plant-pollinator interactions in Crambe abyssinicaHochst. (Brassicaceae) associated with environmental variables
Provedor de dados: 42
Autores: Simioni,Lívia C.; Mussury,Rosilda M.; Mauad,Munir; Dresh,Daiane M.; Pereira,Fabricio F.; Scalon,Silvana P.Q.
Despite the economic importance of Crambe abyssinica, the present study is the first report on bees that occur with this species, and could aid in developing alternative methods for controlling insect pests without seriously impacting pollinators. The present study examined the following questions: (1) Which species are potential pollinators of C. abyssinica? (2) How do environmental conditions influence pollinator visitation fluctuations? Insects were sampled on a weekly basis between 08:00 and 16:00 during five weeks of flowering. When the results of analyses of variance were significant, the data was adjusted using regression equations at a 5% level of probability; the environmental variables were examined using Pearson's correlation coefficient. Apis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiesel; Crambe; Associated insects; Oleaginous; Pollination.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100137

Flower morphology, nectar features, and hummingbird visitation to Palicourea crocea (Rubiaceae) in the Upper Paraná River floodplain, Brazil
Provedor de dados: 42
Autores: Mendonça,Luciana B.; Anjos,Luiz dos.
We investigated flower morphology, nectar features, and hummingbird visitation to Palicourea crocea (Rubiaceae), a common ornithophilous shrub found in the riparian forest understory in the Upper Paraná River floodplain, Brazil. Flowers are distylous and the style-stamen dimorphism is accompanied by other intermorph dimorphisms in corolla length, anther length, and stigma lobe length and form. We did not observe strict reciprocity in the positioning of stigma and anthers between floral morphs. Flowering occurred during the rainy season, October to December. Nectar standing crop per flowerwas relatively constant throughout the day, which apparently resulted in hummingbirds visiting the plant throughout the day. Energetic content of the nectar in each flower...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bird-plant interactions; Heterostyly; Pollination; Brazilian Atlantic forest; Riparian vegetation; Conservation.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000100006

Analysis of the effects of climate variables on Apis mellifera pollen foraging performance
Provedor de dados: 45
Autores: Mattos,I.M. de; Souza,J.; Soares,A.E.E.
ABSTRACT Pollination services performed by bees are essential for the reproduction of a great part of flowering plants. The pollen collected by Apis mellifera while performing pollination (bee pollen), has been incorporated into the human diet for its favorable nutritional components. Around 1,500 tons of bee pollen are produced annually worldwide, especially in Spain, China, Australia, Argentina, and Brazil. Despite the importance of bee pollen within apiculture, little is known about the effects of climate variations on bee pollen collection and production. We monitored the pollen collection performance of 24 different honey bee colonies in different climate conditions within a period of one year. We then analyzed the statistical interaction among the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Africanized honey bees; Bee pollen; Climate; Foraging; Pollination.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000401301

Histological analysis of pollen-pistil interactions in sour passion fruit plants (Passiflora edulis Sims)
Provedor de dados: 47
Autores: Madureira,Hérika Chagas; Pereira,Telma Nair Santana; Cunha,Maura Da; Klein,Denise Espellet.
The success of sexual plant reproduction is directly influenced by specific interactions between the pollen and pistil. Light, fluorescence and scanning electron microscopy techniques were used to evaluate the steps of pollination in sour passion fruit plants (Passiflora edulis Sims). In the compatible interaction, pollen tubes grow through stigma projections towards the ovary. The pollen grain surface was found to be spheroidal and to consist of heteroreticulate exine with six colpi. Furthermore, analysis in vivo of pollen-pistil interactions indicated that stigmas of flowers 24 hours before anthesis are unable to discriminate compatible (genetically unrelated) and incompatible (genetically related) pollen grains. Taken together, these results provide...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flower; Pollen tube; Pollination; Stigma.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452012000200005

Flowers visited by hummingbirds in an urban Cerrado fragment, Mato Grosso do Sul, Brazil
Provedor de dados: 49
Autores: Barbosa-Filho,Waldemar Guimarães; Araujo,Andréa Cardoso de.
Hummingbirds are the main vertebrate pollinators in the Neotropics, but little is known about the interactions between hummingbirds and flowers in areas of Cerrado. This paper aims to describe the interactions between flowering plants (ornithophilous and non-ornithophilous species) and hummingbirds in an urban Cerrado remnant. For this purpose, we investigated which plant species are visited by hummingbirds, which hummingbird species occur in the area, their visiting frequency and behavior, their role as legitimate or illegitimate visitors, as well as the number of agonistic interactions among these visitors. Sampling was conducted throughout 18 months along a track located in an urban fragment of Cerrado vegetation in Campo Grande, Mato Grosso do Sul,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agonistic behavior; Fragmentation; Ornithophily; Pollination.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400021

Plants and pollinating bees in Maringá, State of Paraná, Brazil
Provedor de dados: 52
Autores: Toledo,Vagner de Alencar Arnaut de; Fritzen,Adriano Ernesto de Toledo; Neves,Carolina Antunes; Ruvolo-Takasusuki,Maria Claudia Colla; Sofia,Silvia Helena; Terada,Yoko.
The present study was carried out to survey the bees as visitors to melliferous flora in the region of Maringá, state of Paraná, Brazil. A total of 331 insects were captured, and the fauna comprised 39.88% Trigona spinipes, 38.37% Apis mellifera, 8.16% Tetragonisca angustula, 3.93% Halictidae, 1.21% Megachilidae, 2.42% Anthophoridae, and 3.32% other Hymenoptera. Eleven plant species from nine families were observed. The four families most frequently visited by A. mellifera were Pontederiaceae (93.53%), Sterculiaceae and Polygoniaceae (47.22%), Apocynaceae and Apiaceae (42.86%). The families most visited by T. spinipes were Lamiaceae (64.70%), Apocynaceae (57.14%), Sterculiaceae (51.85%) and Anacardiaceae (48.39%), and the families most visited by T....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stingless bees; Pollination; Melliferous flora.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000400025

Development and growth curve of the pine cones of Araucaria angustifolia (Bert.) O. Ktze, in the region of Curitiba - PR
Provedor de dados: 52
Autores: Anselmini,Justina Inês; Zanette,Flávio.
The objectives of this work were to describe the development and growth rate of the pine cones of Araucaria angustifolia during and after the pollination period, to identify the period of maximum growth of the cones and the period of pollination and maturation of the pine nuts. The adult individuals were found at the Setor de Ciencias Agrarias of the UFPR, in Curitiba - PR. Collections and measurements of pine cones were made in 2003 and 2005. The diameter and the length of the pine cones were measured 15 different times in both the years. In the studied environmental conditions, the period between the pollination and maturation of the pine nuts was 20 months. The maximum pine cone growth was achieved between October and January after the pollination, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Parana-pine; Strobili; Pollination.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000400003

Pollination of soybean (Glycine max L. Merril) by honeybees (Apis mellifera L.)
Provedor de dados: 52
Autores: Chiari,Wainer César; Toledo,Vagner de Alencar Arnaut de; Ruvolo-Takasusuki,Maria Claudia Colla; Oliveira,Arildo José Braz de; Sakaguti,Eduardo Shiguero; Attencia,Valeria Maria; Costa,Fabiana Martins; Mitsui,Marina Hitomi.
This experiment was carried out to evaluate the effect of the honeybee pollination in the production and quality of soybean seeds (Glycine max L. Merril). Seed production was higher (P=0.0001) in covered areas with honeybee colonies (50.64%) and uncovered areas (57.73%) than in covered areas without honeybee colonies. It could be concluded that honeybees were responsible for 95.5% of the pollination accomplished by insects. The pod number in covered treatment with honeybees was 61.38% higher (P=0.0002) than in the covered treatment without honeybees. The average weight of 100 seeds was larger (P=0.0001) in the area covered without honeybees, and reached 17.8 g. The medium content of crude protein in grains was 36.7% and the average oil content was 20.2%....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apis mellifera; Soybean; Glycine max; Honeybees; Pollination; Seed production.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000100005

Floral biology and behavior of Africanized honeybees Apis mellifera in soybean (Glycine max L. Merril)
Provedor de dados: 52
Autores: Chiari,Wainer César; Toledo,Vagner de Alencar Arnaut de; Ruvolo-Takasusuki,Maria Claudia Colla; Attencia,Valeria Maria; Costa,Fabiana Martins; Kotaka,Carolina Satie; Sakaguti,Eduardo Shiguero; Magalhães,Helida Regina.
This research was carried out to evaluate the pollination by Africanized honeybees Apis mellifera, the floral biology and to observe the hoarding behavior in the soybean flowers (Glycine max Merril), var. BRS-133. The treatments were constituted of demarcated areas for free visitation of insects, covered areas by cages with a honeybee colony (A. mellifera) and also covered areas by cage without insects visitation. All areas had 24 m² (4m x 6m). The soybean flowers stayed open for a larger time (82.82 ± 3.48 hours) in covered area without honeybees. The stigma of the flowers was also more receptive (P=0.0021) in covered area without honeybees (87.3 ± 33.0%) and at 10:42 o'clock was the schedule of greater receptivity. The pollen stayed viable in all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Africanized honeybee; Apis mellifera; Soybean; Glycine max; Pollination; Floral biology; Honeybee behavior.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300006

Vertical and horizontal distribution of pollination systems in cerrado fragments of central Brazil
Provedor de dados: 52
Autores: Martins,Fernanda Quintas; Batalha,Marco Antônio.
In fragments of the cerrado, we determined the frequency of pollination systems and analyzed their spatial distribution. We placed 38 transects, sampling 2,280 individuals and 121 species. As expected in Neotropical regions, bee-pollination was the most frequent pollination system. We found a decrease in the frequency of plants pollinated by beetles towards the fragment interior. Similarly, we found significant variation in relation to height just for the bats; there was an increase in the frequency of plants pollinated by bats towards the higher heights. In general, we found no horizontal and vertical variation in the pollination systems, probably as consequence of the more open physiognomy of the cerrado vegetation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central-western Brazil; Cerrado; Pollination; Savanna; Spatial distribution; Woody component.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300016

Efficiency of n-octyl-acetate, 2-heptanone and citronellal in repelling bees from basil (Ocimum sellowii - Labiatae)
Provedor de dados: 52
Autores: Malerbo-Souza,Darclet Teresinha; Nogueira-Couto,Regina Helena.
The objective of this study was to test repellent substances for honey bees, Apis mellifera, for basil, Ocimum sellowii, and to study the most frequent insects in this crop as well as its behaviors. The frequency of honey bees did not decrease with the application of n.octyl.acetate, citronellal and 2.heptanone, used as repellents, in the concentrations 2.5, 5.0, 7.5 and 10.0% diluted in water. However, when the products (20%) were diluted in water (75%) and glycerine (5%) were effective in repelling those bees of the basil flowers for a period of 20 minutes. The flower lasted, on average, 30 h from the bud phase until the flower withered. The flowers number opened by inflorescence was, on average, 5.65 flowers, and the inflorescence presented, on average,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Repellent; Apis mellifera; Basil; Ocimum sellowii; Pollination; Insects.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000100016

Floral visitors and reproductive strategies in five melittophilous species of Bignoniaceae in Southeastern Brazil
Provedor de dados: 52
Autores: Yanagizawa,Yuriko A. N. Pinto; Maimoni-Rodella,Rita de Cassia Sindrônia.
In order to evaluate the pollination strategies of Bignoniaceae, the floral biology and the floral visitors in five species, three cerrado shrubs (Arrabidaea brachypoda (DC.) Bor., Jacaranda decurrens Cham., and Jacaranda oxyphylla Cham.), and two lianas from the border of a semideciduous seasonal forest (Arrabidaea samydoides (Cham.) Sandw., and Arrabidaea triplinervia H. Baill.) were studied in Botucatu, São Paulo State, Southeastern Brazil. The flowering periods were partially overlapping, especially between species in the same habitat. All the five species were functionally allogamous, melittophilous, nototribic and mainly pollinated by long tongued large bees. Some medium-sized and small pollen-foraging bees were occasional legitimate visitors,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arrabidaea; Jacaranda; Melittophilly; Pollination; Breeding system.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000700015

Foraging behavior of bee pollinators on the tropical weed Triumfetta semitriloba: flight distance and directionality
Provedor de dados: 57
Autores: COLLEVATTI,R. G.; SCHOEREDER,J. H.; CAMPOS,L. A. O.
We studied flight distance and directionality of bee pollinators on the tropical shrub weed Triumfetta semitriloba Jacq. (Tiliaceae), addressing (1) within- and between-plant movement pattern; (2) distances flown between plants; (3) flight directionality. Flowering plants were distributed in well-delimited clumps, in each of two pasture areas (A1 and A2) and one area of forest gap (A3), in Viçosa, southeastern Brazil. Five solitary bee species, Augochlorella michaelis, Augochloropsis cupreola, Pseudocentron paulistana, Ceratinula sp., Melissodes sexcincta, and two social bee, Plebeia droryana, P. cf. nigriceps were observed. All species moved mainly to the nearest flower on the same individual plant and, in between-plant movements, to the first or second...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Foraging behaviour; Directionality; Pollination; Flight distance; Solitary bees.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000100005

Pollination ecology of the tropical weed Triumfetta semitriloba Jacq. (Tiliaceae), in the South-eastern Brazil
Provedor de dados: 57
Autores: COLLEVATTI,ROSANE G.; CAMPOS,LÚCIO A. O.; SILVA,ALEXANDRE F. DA.
This work aimed to study the pollination ecology of the tropical weed Triumfetta semitriloba Jacq. (Tiliaceae), in Viçosa, South-eastern Brazil, during the flowering season of 1993 and 1994. Two patches located in pasture (P1 and P2) and one patch in a forest trail (P3) were chosen and ten plants on each patch were sorted. The number of opened flowers were counted during one day, in each flowering month and patch. All observed flower visitors were identified and their behavior while visiting flowers was recorded. Frequency of visits to flowered branches was obtained and some pollinator individuals were captured for analysis of pollen load. Flowers are conspicuously yellow and actinomorphic, with five nectaries around the ovary base, and opened sequentially...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollination; Triumfetta semitriloba; Tiliaceae; Tropical bees; Weed.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081998000300004

Evaluation of Yield Component Traits of Honeybee-Pollinated (Apis mellifera L.)Rapeseed Canola (Brassica napus L.)
Provedor de dados: 117
Autores: Araneda Durán,Ximena; Breve Ulloa,Rodrigo; Aguilera Carrillo,José; Lavín Contreras,Jorge; Toneatti Bastidas,Marcelo.
Recent introduction of hybrid varieties raises the question if bees (Apis mellifera L.) contribute as pollinator agents in developing the full yield potential of rapeseed (Brassica napus L.). In order to evaluate the yield achieved by B. napus cv. Artus pollinated by A. mellifera testing was carried out in the district of Freire, La Araucanía Region, Chile. This consisted in isolating or excluding rapeseed plants from pollinators with exclusion cages. Treatments applied were total exclusion (T1), partial exclusion (T2) and free pollination (T0) with a density of 6.5 hives ha-1, in order to determine the following yield components traits: grains per silique, siliques per plant, 1000 grain weight and yield. The experimental design used was randomized...
Tipo: Journal article
Palavras-chave: Bee hives; Pollination.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200014

Pistillate Flower Abcission Symptoms of ‘Serr’ Walnut (Juglans RegiaL.)
Provedor de dados: 117
Autores: González R,Cristián; Lemus S,Gamalier; Reginato,Gabino.
Pistillate flower abscission (PFA) severely affects walnut (Juglans regia L.) production, mainly of the cultivar ‘Serr’. A study on symptoms of flower abortion in walnut ‘Serr’, induced by excess or lack of pollen, was carried out following the evolution of flowers and peduncles. Hand pollinated flowers, with different pollen concentrations: 0, 1, 5, 25, 50 and 100% pollen diluted (w/w) in talcum powder, showed external and internal abortion symptoms. External symptoms were recorded directly from the tree, while for internal symptoms, flower excisions stained with blue Toluidin-O at 0.05%, were analyzed under an optical microscope. Excess pollen abortion produced flowers with rapid damage. The growth rate was very low, involucre brightness was lost and the...
Tipo: Journal article
Palavras-chave: Lack of pollen; Excess of pollen; Pollination.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000200008

Inbreeding in sugarcane varieties
Provedor de dados: 65
Autores: Silva,Marcelo de Almeida; Gonçalves,Paulo de Souza.
Sugarcane species are allogamous, i.e. selfing is expected to reduce plant vigor. This study was undertaken to obtain and evaluate first-generation inbred lines that may be used for further crosses and determine the extent of inbreeding depression in sugarcane. In this research, 26 parental varieties were self-pollinated to obtain about 19,000 seedlings. Results showed that it is possible to segregate different traits in a given variety and find lines with promising outcome for all assessed characteristics. The soluble solids segregation observed in low and even high-Brix varieties increases the possibility of quick improvement in this trait. Self-pollination did not produce a general loss in yield traits such as soluble solids, stalk number and stalk...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Endogamy; Hybrids; Pollination; Soluble solids.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000400005

Pecan cultivation: general aspects
Provedor de dados: 65
Autores: Fronza,Diniz; Hamann,Jonas Janner; Both,Vanderlei; Anese,Rogério de Oliveira; Meyer,Evandro Alcir.
ABSTRACT: Given the increasing investment in the pecan production in southern Brazil, it becomes necessary researches, assisting in solve problems and proposition of technical and methodology to enhance this production chain. Thus, the present review aimed to survey the existing information about the culture, both on the world and the Brazilian scene. Issues related to botany, climate and soil requirements, alignment and planting density, cultivars, pests and diseases, among other technical aspects of this culture will be addressed. Pecan nut presents nutraceutical properties that are beneficial to human health, which has increased its demand from consumers. However, there are few research results with pecan nut in Brazil and there are many gaps in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carya illinoinensis (Wangenh.) K. Koch; Management; Pollination; Cultivars.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000200201