Document Type

Article

Journal/Book Title/Conference

Botanical Journal of the Linnean Society

Volume

94

Publication Date

1-1-1987

First Page

407

Last Page

419

Abstract

Floral biology of a primary rain forest palm, Astrocaryum mexicanum Liebm. A detailed account of the changes in visitor numbers and behaviour, inflorescence phenology, and breeding systems is presented. lnflorescences open early in the morning (05.00 hours). Stigmas remain receptive for 15 h, while anther dehiscence occurs 20 h after inflorescence opening. Maximum pollen viability occurs the next day at 05.00 hours. This combination of features largely precludes self-pollination. Controlled pollinations show that apomixis and auto-pollination are absent, and indicate strong in compatibility. In contrast cross-pollinations do not differ in fruit set from open-pollinated controls. The fruit set in inflorescences exposed to pollinators for different periods after opening (and later stopping pollinator activity by fumigation), indicates that pollination occurs soon after inflorescence opening.

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