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| Pinheiro-Costa,Bruna Karen; Mesquita-Neto,José Neiva; Rego,Juliana Ordones; Schlindwein,Clemens. |
| ABSTRACT Heteranthery, the presence of different types of stamens in a flower, may reduce the conflict between pollinators and plants by ensuring the resource for the pollinator without drastically affecting the availability of viable male gametes for fertilization, according to the division-of-labor hypothesis. We investigated whether the poricidal anthers of Senna pendula, a buzz-pollinated heterantherous species, present morphological and physiological differences among pollen grains from the three sets of stamens. We compared quantity, ornamentation, size and fecundity of pollen from long, medium and short stamens. The short feeding stamens produced larger but fewer pollen grains than the long pollinating stamens, which produced smaller pollen grains... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bees; Buzz-pollination; Division-of-labor; Heteranthery; Pollen economy; Senna pendula; Stamen dimorphism. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000300446 |
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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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