利用SSR标记分析小麦骨干亲本“矮孟牛”及衍生品种(系)的遗传多样性  

Genetic Diversity of Main Parent of Wheat ‘Ai meng niu’ and its Pedigree on SSR Markers

作　　者：王珊珊[1] 李秀全[2] 田纪春[1] 

机构地区：[1]山东农业大学作物生物学国家重点实验室,小麦品质育种室,泰安271018 [2]中国农业科学院作物品种资源研究所,北京100081

出　　处：《分子植物育种》2007年第4期485-490,共6页Molecular Plant Breeding

基　　金：国家自然科学基金项目(30671270);国家科技支撑计划项目(2006BAD01A02-15)资助。

摘　　要：利用SSR标记研究了"矮孟牛"及其衍生品种(系)共计91份小麦材料的遗传多样性。20对SSR引物检测到120个多态性位点,每对引物多态性位点数平均为6.0个,变幅为3～9个。91份小麦材料遗传多样性GS变幅为0.411～0.961,遗传差异较大。UPGMA聚类分析将矮孟牛及其衍生品系分成四大类,能较好的反映品种(系)之间的遗传差异。矮孟牛亲本及矮孟牛七大类型—审定品种—衍生品系的遗传多样性指数变化呈逐渐上升趋势,但上升趋势逐渐减小,这与各育种单位反复利用矮孟牛及其衍生品种(系)有关;由矮孟牛与山农辐66、山农辐63为亲本杂交衍生出的材料较多,合理组配杂交亲本具有重要意义。Genetic diversity in 91 accessions of ‘Ai meng niu＇ and its pedigree was assessed using SSR markers. The 20 pairs of SSR informative primers generated a total of 120 alleles. Each.pair of SSR primer could detect 3 to 9 alleles with an average of 6.0. Genetic similarities among 91 accessions ranged from 0.411 to 0.961, which indicated that genetic difference among them was significant. Ai meng niu and its Pedigrees could be clustered into four groups with UPGMA cluster analysis. It could be a suitable index for genetic divergences among wheat cultivars. The genetic diversities of Ai meng niu＇s Pedigree have the tendency of increasing with time slightly, This is related with using Ai meng niu and its Pedigrees repeatly of breeding units. A set of derived lines have been developed from crosses between Aimengniu and Shannong Fu 66, Shannong Fu 63, selecting parents of hybrid reasonably is significant.

关 键 词：小麦 SSR 遗传多样性 聚类分析 

分 类 号：S512.1[农业科学—作物学]