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Title: | Pollination of Pagamea duckei Standl. (Rubiaceae): A functionally dioecious species |
Other Titles: | Polinização de Pagamea duckei Standl. (Rubiaceae): Uma espécie funcionalmente dióica |
Authors: | Terra-Araujo, Mário Henrique Webber, Antonio Carlos Vicentini, Alberto |
Keywords: | Apoidea Melipona Pagamea Rubiaceae |
Issue Date: | 2012 |
metadata.dc.publisher.journal: | Biota Neotropica |
metadata.dc.relation.ispartof: | Volume 12, Número 4, Pags. 98-104 |
Abstract: | The floral biology, pollination and breeding system of Pagamea duckei Standl. (Rubiaceae) were studied at the Reserva Biológica da Campina, Manaus, Amazonas, Brazil. Floral morphology suggested that P. duckei is a distylous species. However, crossing experiments revealed that it is functionally dioecious. The flowers are actinomorphic, yellowish, produce nectar and a sweet odor, which is more intense in the morning. Anthesis started in the morning between 5.00 and 6.00 AM and extended until dusk, when the corolla tube abscissed. The flowers were visited mostly by bees of the genus Melipona. Pagamea duckei is not agamospermic and thus needs pollen vectors for effective pollination. The results of this study strengthen the idea that, in Pagamea, species with distylous flower morphology are actually functionally dioecious. |
metadata.dc.identifier.doi: | 10.1590/S1676-06032012000400010 |
Appears in Collections: | Artigos |
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