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棉花学报  2008 

瑟伯氏棉和异常棉的陆地棉导入系的EST-SSR和gSSR分析

DOI: 1002-7807(2008)04-0243-06, PP. 243-248

Keywords: 导入系,瑟伯氏棉,异常棉,EST-SSR,gSSR

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Abstract:

用EST-SSR和gSSR分析了瑟伯氏棉和异常棉的8个导入系。结果表明,SSR的扩增带可以分为两大类第一大类是导入系和受体晋棉6号之间没有差异;第二大类是导入系和受体晋棉6号之间存在差异。第一大类可分为5个小亚类;第二大类中,对于ESTSSR来说,可分为4个小亚类一是在晋棉6号中出现的条带在部分导入系中消失;二是条带大小与晋棉6号相比有变化;三是部分导入系中出现了瑟伯氏棉和异常棉的条带,但与晋棉6号相同的条带消失了;四是部分导入系中出现了供体和受体都没有的特异条带,而在另一些导入系中条带大小发生变化。对于gSSR来说,第二大类中又多了两个小亚类即部分导入系中除了供体和晋棉6号都没有的条带;或供体和晋棉6号的条带同时出现在导入系中。这些供体和受体异常条带的增加和消失可能是SSR区域和SSR侧翼序列变化的结果。与gSSR相比,EST-SSR在导入系和晋棉6号之间的变化更大,这可能是导致导入系比晋棉6号纤维品质更优的原因。

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