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以代表我国玉米6个主要杂种优势群旅大红骨、Lancaster、Reid、苏湾、墨白和塘四平头的标准测验种丹340、自330、792 2、苏37、4 4 9、黄早四和适应我国喀斯特高海拔山区的玉米骨干自交系为材料,利用RAPD标记对其进行遗传多样性和杂种优势群划分。从90个随机引物中筛选出2 1个多态性好的引物扩增材料,共产生14 6条谱带,其中12 4条谱带有多态性,占86 3% ,说明喀斯特高海拔山区的玉米骨干自交系具有较丰富的遗传多样性。通过UPGMA聚类分析,以遗传相似系数为0 6 32 ,可将我国喀斯特高海拔山区玉米种质资源的16个骨干自交系划分为5个类群。
To represent China’s maize six major heterotic group Ludahongbang, Lancaster, Reid, Su Wan, Mo Bai and Tong Siping flat standard test variety Dan 340, since 330,792 2, Su 37,4 4 9, yellow early four And maize inbred lines adapting to high altitude mountainous areas in karst area of China were used as materials to carry out genetic diversity and heterosis grouping by RAPD markers. A total of 14 6 bands were screened out from 90 random primers, of which 12 4 bands were polymorphic, accounting for 86.3% of the total, indicating that karst high altitude mountainous areas The maize skeleton inbred lines have rich genetic diversity. By UPGMA cluster analysis, the genetic similarity coefficient of 0 6 32 can be used to classify 16 key inbred lines of maize germplasm resources in karst high altitude mountainous areas into 5 groups.