44份杂交粳稻亲本遗传多样性的SSR分析

摘要

Genetic similarity of 44 parents of Japonica hybrid rice were analyzed by 158 alleles detected from : pairs of primers. The genetic similarity coefficients of the 44 parents of Japonica hybrid rice ranged from 0.54 0.96. Furthermore, all the varieties were classified into 4 groups, at the level of genetic similarity coefficient 0.' according to cluster analysis by an un-weighted pair-group average method with arithmetic mean (UPGMA). M( of the varieties were classified into the fourth group. The fourth groups were classified into 5 subgroup at t level of genetic similarity coefficient 0.75. All the Male sterile lines and maintainer lines were classified in the subgroup of the fourth groups.%利用58对SSR引物所检测出的158个等位基因位点对44份三系杂交粳稻亲本品种(系)进行遗传相似性分析,44个粳稻品种(系)间遗传相似系数的变异范围为0.54～0.96.采用非加权类平均法进行聚类分析,在相似系数0.71处,可将44个粳稻品种(系)分为4类,绝大多数品种(系)都聚为第四类群,第四类群在遗传相似系数0.75处,又可分为5个亚群,所有的保持系和不育系单独聚为E亚群.