Reproductive phenology and pollination biology of Canavalia brasiliensis Mart. ex Benth (Fabaceae).
This work studied the phenology and biology of the pollination of C. brasiliensis in an area of its natural occurrence (Pocinhos – PB). Fifteen plants were marked and observed every two weeks for the study of phenology. For the study of floral biology and morphology, flowers and inflorescences were marked and observed until fruit appeared. Visitors to flowers were observed throughout the experiment, and the frequency, time and behavior of their visits was registered. Canavalia brasiliensis demonstrated a pattern of annual flowering which was continuous, of long duration, with periods of greater flowering activity in the dry season. The inflorescence is of the paniculatum type, with flowers whose attributes are related to the syndrome of melittophily. Anthesis occurs during the day, beginning at 05h00. Nectar is produced from the phase of pre-anthesis, with a concentration of sugars around 44-60%. Visits by bees (Xylocopa frontalis, X. suspecta and X. sp., Apis mellifera and Centris similis) and birds (Phaethornis ruber, Chlorostilbon aureoventris, Eupetomena macroura and Coereba flaveola) were observed. Xylocopa frontalis acted as an effective pollinator.
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Document Type: Research Article
Publication date: January 1, 2009