Data/hora: 06/06/2024 18:26:35

Biblioteca(s): | Embrapa Meio-Norte.
Data corrente: | 03/07/1997
Data da última atualização: | 16/01/2024
Autoria: | ANDERSON, A. B.; OVERAL, W. L.; HENDERSON, A.
Título: | Pollination ecology of a forest-dominant palm (Orbignya phalerata Mart.) in Northern Brazil.
Ano de publicação: | 1988
Fonte/Imprenta: | Biotropica, v. 20, n. 3, p. 192-205, 1988.
Idioma: | Inglês
Conteúdo: | Inflorescence morphology, phenology, and pollination of the ecologically dominant and economically important babassu palm (Orbignya phalerata) were studied in northern Brazil. The breeding system of this species is complex. Inflorescences are either morphologically staminate or androgynous. In a funcional sense the former are invariably male and the latter generally female, although an intermediate, functionally hermaphroditic type occurs rarely. Individual trees vary from exclusively staminate to predominantly androgynous. In the populations studied, flowering peaked in the rainy season (January-May). Three lines of evidence led us to consider self-pollination extremely rare. First, functionally hermaphroditic inflorescences exhibited protogyny: pistillateflowers were receptive during the first 48 hr following anthesis, and staminate flowers released pollen only thereafter. Second, seed ser did not occur in androgynous inflorescences that had been isolated from external pollen sources. Third, simultaneous flowering of staminate and androgynous inflorescences in individual palms was rare. Despite the high abundance and diversity of insects visiting inflorescences, detailed observations indicated that the only likely insecr pollinator is the nitidulid beetle Mystrops mexicana.
Palavras-Chave: | Babassu; Biologia floral; Brasil; Forest-dominant palm; Northern Brazil; Pollination ecology.
Thesagro: | Babaçu; Fenologia; Orbignya Phalerata; Polinização.
Categoria do assunto: | --
Registro original: | Embrapa Meio-Norte (CPAMN)
Exemplares: | CPAMN - (978-1) - ADC - AP - PP - S 10995 -  - S 10995 - DIS