Polyembryony in angiospermous trees of the Brazilian Cerrado and Caatinga vegetation

Acta Botanica Brasilica

Antonieta N. Salomão¹  Antonio C. Allem¹ 

[1] ,Embrapa Recursos Genéticos e BiotecnologiaBrasília DF

关键词: angiosperms;    agamospermy;    apomixis;    polyembryony;    Brazilian neotropics;    angiospermas;    agamospermia;    apomixia;    poliembrionia;    neotrópico brasileiro;   

DOI  :  10.1590/S0102-33062001000300007

来源: SciELO

【 摘 要 】

The occurrence of polyembryony was investigated in 75 woody species of the Cerrado in central Brazil and the xerophilous Caatinga vegetation in northeastern Brazil. Fourteen species showed polyembryony, a type of anomalous angiospermous reproduction. Polyembryony is reported for the first time for nine genera, Astronium, Byrsonima, Cariniana, Copaifera, Hancornia, Magonia, Myracrodruon, Tabebuia, and Tapirira. The positive correlation found between polyembryony, sexual reproduction, and apomictic processes suggests that a number of angiospermous species may make regular use of multiple breeding systems.

【 授权许可】

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