利用SSR标记进行粳稻品种的遗传多样性研究

Genetic diversity of Japonica rice varieties based on SSR markers

利用37对SSR引物分析了72个不同生态类型粳稻品种的遗传多样性,共检测出了186个等位基因,平均每对SSR引物可检测出2～11个等位基因变异,平均为5.1个.UPGMA聚类分析结果表明,利用SSR分子标记将72个材料分成7大类群,说明SSR标记在区分水稻品种生态类型和品种的遗传多样性方面具有重要作用,也证实了SSR标记是研究水稻种质资源分类、地理分布、生态类型的有效手段.

Thirty-seven SSR（simple sequence repeats）were used to study genetic diversity among 72 Japonica rice varieties. The average number of alleles per locus was 5.1 with a range from 2 to 11 .UPGMA cluster analysis showed that all cultivars could be classified into 7 groups, which generally agreed with ecotypes. And this indicated SSR markers play an important role in ecotype dassification and study of genetic diversity. Consequently, SSR markers could be used as a useful tool for measuring genetic diversity, assigning rice to geographical distribution, and analysing its ecotype.