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| Registros recuperados: 121 | |
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| 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 |
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| 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 |
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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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| 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 |
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| 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 |
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| 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™ 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... |
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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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 121 | |
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