新疆甜高粱种质资源遗传多样性的SSR分析

选用50对SSR引物对新疆现有72份甜高粱种质资源进行遗传多样性分析。结果表明:有20对引物在72份甜高粱种质资源中表现为多态性。共检测到91个等位基因,每对引物可检测到的等位基因数目为2～5个,平均为3.45个。多态性信息量(PIC)的变动范围为0.2859～0.6652,平均为0.5057。72份甜高粱种质间的遗传相似系数变化范围为0.2001～1.000,平均值为0.5599。UPGMA聚类分析将72份材料划分为A、B两大类群,A群包括69份材料,而A群又被分成从Ⅰ到Ⅺ共11个亚群,B群包括3份材料,农艺性状近似的大多被聚到同一类群。

Simple Sequence Repeats Polymorphism Analysis of Sweet Sorghum Germplasm in XinJiang

Totally,72 sweet sorghum germplasm in Xinjiang were used to analyze their genetic diversity and genetic relationship using 50 SSR primers.The result indicated that a total of 20 SSR primers performed polymorphism and 91 alleles loci were detected.The average number of alleles per SSR was 3.45 with a range from 2 to 5.The value of allelic polymorphic information content(PIC) ranged from 0.2859 to 0.6652,on an average of 0.5057 per SSR marker.The genetic similarity coefficient ranged from 0.2001 to 1.000 with a average of 0.5599.The cluster analysis grouped the 72 sweet sorghum cultivars and lines into 2 main groups.Group A included 69 accessions and group B included only 3 accessions.Group A was again sub-divided into sub-groups I through XI.The accessions of sweet sorghum with similar agronomic trait was mostly clustered one group.