| Registro completo |
| Provedor de dados: |
Biota Neotropica
|
| 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
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
