期刊论文详细信息
Revista Brasileira de Engenharia Agrícola e Ambiental
Variation of dormancy extent of Stylosanthes scabra seeds from three ecogeographic regions of Pernambuco
Anunciação Filho, Clodoaldo J. da1  Matos, Valderez Pontes1  Queiroz, Rosilda de Melo1 
[1] UFRPE, Recife
关键词: germination;    dormancy;    evolution    INTRODUÇÃO Sementes dormentes são aquelas que;    embora viáveis;    não germinam em condições apropriadas à germinação;    como o fornecimento de temperatura favorável e adequado suprimento de água e oxigênio (Roberts;    1972;    Mayer & Poljakoff-Mayber;    1975;    Carvalho & Nakagava;    2000);   
DOI  :  10.1590/S1415-43662000000300018
学科分类:农业科学(综合)
来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia
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【 摘 要 】

This study aimed at evaluating the genetic variability of Stylosanthes scabra (Alfafa of Northeast) populations as a result of the adaptation strategy to different environments from the regions: Mata, 'Agreste' and 'Sertão' in the state of Pernambuco. A great interpopulational variability relative to the germination of non scarified seeds was encountered. Populations from 'Sertão', when compared to the ones from 'Mata' and 'Agreste', showed an inferior germination capacity, suggesting that they acquired favorable conditions to dormancy, probably in response to the environmental adversities in that region.

【 授权许可】

CC BY-NC   

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