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| Registros recuperados: 121 | |
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| 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 |
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| 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... |
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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 |
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| 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... |
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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 |
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| 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 & Evolutionary Biology; tbogich@princeton.edu; Bradbury, Richard B.; Conservation Science Department, Royal Society for the Protection of Birds;; Clothier, Brent; New Zealand Plant & 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 121 | |
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