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草业学报  2010 

野生狗牙根种质资源的AFLP遗传多样性分析

, PP. 155-161

Keywords: 狗牙根,AFLP,遗传多样性

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Abstract:

利用AFLP标记对采自非洲以及中国四川、重庆、云南、贵州和西藏五省区的共44份野生狗牙根材料进行遗传多样性分析。10对引物共扩增出462个条带,其中多态性条带有452条,多态性条带比率为97.64%,材料间的遗传相似系数(GS)范围为0.64~0.95,平均GS值为0.76。根据研究结果进行聚类分析和主成分分析,可将供试材料分成五大类,分类结果与材料的地理分布大致相符,呈一定的地域性分布规律。由此可见,丰富的地理生态条件造就了狗牙根资源丰富的遗传多样性和明显的地域性分布规律。

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