摘要： 利用RAPD标记对来自春、夏谷区不同育种单位的2份谷子品种进行了多态性和聚类分析。结果表明，2份品种的RAPD标记的多态性较低，1个引物共扩增出56条多态性带，平均每个引物扩增多态性带为4.l条，引物S0和S45都有7条多态性带，能够鉴别的品种最多为1个。聚类分析表明，当遗传相似性系数为0.75时，2个品种可分为4类，不同生态区的品种可以归为一类，而同一生态区的品种也可以归为不同的类，基于RAPD的遗传相似性和品种来源地没有必然的一致性。

关键词: 谷子, 遗传差异, RAPD标记

Abstract: Genetic variation of 23 varieties of foxtail millet collected from spring millet region and summer millet regions was studied. The results showed that 23 varieties had certain degree of genetic variation in molecular level, but the degree of variation was not significant. 13 primers yielded 56 polymorphic bands from 23 varieties and the average of polymorphic bands was 4.31 yielded by each primer. The primers S30 and S45 yielded 7 polymorphic bands, respectively, and which could be used to distinguish 13 varieties. The cluster analysis of RAPD makers indicated that the cluster type of genetic variation of varieties was not consistent with ecological type. Varieties from different regions could be clustered in the same type, and varieties from same regions might be clustered in different types.

Key words: Foxtail millet (Setaria italica Beauv.), Genetic variation, RAPD marker

中图分类号: 

• S515.01