Data/hora: 10/06/2024 10:02:40

Provedor de dados: | 49
País: | Brazil
Título: | Pollination of Pagamea duckei Standl. (Rubiaceae): a functionally dioecious species
Autores: | Terra-Araujo,Mário Henrique; Webber,Antonio Carlos; Vicentini,Alberto.
Data: | 2012-12-01
Ano: | 2012
Palavras-chave: | Floral biology; Heterostyly; Campinarana forests; Central Amazonia.
Resumo: | 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400010
Editor: | Instituto Virtual da Biodiversidade | BIOTA - FAPESP
Relação: | 10.1590/S1676-06032012000400010
Formato: | text/html
Fonte: | Biota Neotropica  v.12 n.4 2012
Fonte: | info:eu-repo/semantics/openAccess