【作者】 刘炜； 李自超； 史延丽； 王坚； 马洪文； 张洪亮；

【Author】 LIU Wei~(1,2) LI Zi-chao~2 SHI Yan-li~1 MA Hong-wen~1 WANG Jian~1 ZHANG Hong-liang~2 1.The Crop Research Institute of Ningxia Academy of Agricultural and Forestry Sciences,Ningxia Yongning 750105,China; 2.Department of Plant Genetics and Breeding,China Agricultural University,Beijng 100094,China

【机构】 宁夏农林科学院农作物研究所； 中国农业大学农学与生物技术学院；

【摘要】 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。更多还原

【Abstract】 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 classification 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.更多还原