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小麦白粉菌ISSR分子标记体系构建及其分离菌株的多样性分析

, PP. 493-499

Keywords: 小麦白粉菌,ISSR分子标记体系,多样性分析,毒性

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Abstract:

为了对小麦白粉菌群体的多样性进行研究,构建了其ISSR分子标记体系。以小麦白粉菌基因组DNA为模板,用正交设计和单因素水平优化的方法对ISSR反应程序中的一些重要参数进行摸索和优化,建立了小麦白粉菌ISSR-PCR反应的优化反应体系;对20个ISSR引物的退火温度进行了优化,并筛选出一些多态性较好的ISSR引物。对33个分离菌株的ISSR扩增表明,ISSR标记在我国小麦白粉菌中存在较高的多态性;对ISSR标记揭示的白粉菌的遗传多样性和毒性多样性进行了比较,结果表明两者之间存在一定程度的相关性。

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