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| Silva,André Luiz Gomes da; Pinheiro,Maria Célia Bezerra. |
| Eugenia uniflora,E. punicifolia,E. neonitida and E. rotundifolia are perennial species, usually shrubs, which occur in the restinga of the Grumari Natural Municipal Park, in western Rio de Janeiro, Brazil. They have Papaver-type pollen-flowers that are hermaphrodite, polystemonous and pollinated mainly by bees. An assessment of the breeding systems showed that only E. uniflora and E. punicifolia are self-compatible. The fruit/flower, seed/ovule and seed/fruit ratios were calculated for each species. Fruit and seed predators were identified and predation rates were estimated. Total reproductive success for each species in the restinga was extremely low. In order to have one viable seed free from herbivore attack at the end of the reproductive process, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding system; Eugenia; Myrtaceae; Reproductive success; Seed herbivory. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000200024 |
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| Moço,Maria Cecília de Chiara; Pinheiro,Maria Célia Bezerra. |
| The pollination ecology of Swartzia apetala Raddi var. apetala was studied in the restinga of Maricá, State of Rio de Janeiro, Brazil. S. apetala var. apetala is a shrub with asynchronic annual blooming, between the months of November and April (hot-rainy season). Each plant can exhibit more than one blooming episode in this period. Their flowers are hermaphrodites, apetalous, heterantherous, odoriferous, and the pollen represents the only reward offered to visitors. It is pollinized by species of Centris and Xylocopa, solitary and polyletic bees, which collect the pollen by means of vibratory movements. Other bees such as Apis mellifera, Pseudaugochloropsis graminea and Trigona spinipes are only pollen-thieves. In this variety of Swartzia vibrating is an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leguminosae; Papilionoideae; Swartzia; Buzz-pollination; Pollen-flower. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000400006 |
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| Gomes,Rejane; Pinheiro,Maria Célia Bezerra; Lima,Heloísa Alves de; Santiago-Fernandes,Lygia Dolores Ribeiro. |
| Manilkara subsericea (Mart.) Dubard e Sideroxylon obtusifolium (Roem. & Schult.) T.D. Penn. apresentam inflorescências fasciculadas, com flores perfeitas, nectaríferas, odoríferas e hercogâmicas. Apresentam dicogamia protogínica e antese diurna. A corola é gamopétala, com a região basal dos lacínios formando um pequeno tubo. Os lacínios medianos, em ambas as espécies, curvam-se em direção ao eixo da flor, formando uma espécie de canaleta, na qual fica alojado o estame. As anteras são versáteis, extrorsas e rimosas. A liberação dos grãos de pólen ocorre na forma de nuvem por um mecanismo explosivo proveniente do acionamento do dispositivo lacínio-estame. As flores foram visitadas por abelhas, borboletas, besouros, moscas e Thysanoptera, sendo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biologia floral; Liberação explosiva de pólen; Manilkara subsericea; Sapotaceae Sideroxylon obtusifolium. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000200008 |
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