Reproductive biology ofPolyalthia littoralis (Annonaceae) |
| |
| Authors: | Hiroshi Okada |
| |
| Affiliation: | (1) Department of Biology, College of General Education, Osaka University, 560 Toyonaka, Osaka, Japan |
| |
| Abstract: | Flowering phenology of some annonaceous trees and reproductive biology ofPolyalthia littoralis (Annonaceae) were studied. The trees showed various types of flowering phenology within the family. Among them,P. littoralis had hermaphroditic and protogynous flowers, and exhibited continuous flowering throughout the year. Bagged flowers set fruits and seeds comparable to the control. The observations of meiotic stages and the results of castrated tests indicated no possibility of apomictic reproduction. The abscised anthers attached to torus by the extended spiral thickenings, and accomplished self-pollination. Outbreeding possibly occurs, but the following self-pollination guarantees seed set. |
| |
| Keywords: | Angiosperms Annonaceae Polyalthia littoralis Extended spiral thickenings flowering phenology reproductive biology self-pollination Malesian tropics |
| 本文献已被 SpringerLink 等数据库收录！ |
|
