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| Registros recuperados: 121 | |
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| 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 |
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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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| 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 |
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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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| 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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| 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 |
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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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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 121 | |
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