小麦染色体2DS雌性育性位点遗传多态性分析  

A genetic Diversity Study of Female Fertile Locus Based on 2DS Chromosome SSR Markers in Wheat(Triticum Aestivum L)

作　　者：侯北伟[1] 窦秉德[1] 杨晋彬[1] 顾正中[2] 朱晓滨[1] 徐海风[1] 王芳[1] 

机构地区：[1]新疆农业大学农学院 [2]淮安市农业科学研究院,江苏淮安223301

出　　处：《淮阴师范学院学报（自然科学版）》2008年第2期167-172,共6页Journal of Huaiyin Teachers College;Natural Science Edition

基　　金：国家自然科学基金资助项目(30771380)

摘　　要：小麦雌性不育系XND126属于生态遗传型不育系.通过SSR分子标记分析,在2DS染色体上定位了一个雌性育性主效QTL位点.为了构建高密度遗传图谱并精细定位该主效位点,用2DS参考遗传图谱上的14对SSR标记,研究了59个育性正常的普通小麦品种与XND126的DNA多态性,筛选到不同生态型多态性较高的品种共12个,每个品种多态性标记达12-13个,这些品种可以用作杂交亲本,构建新的QTL精细定位群体.在品种组成的群体中,与主效基因位点最近的标记,表现出有较多的品种与雌性不育系具有差异.A female sterile line XND126 was found to be ecological sterility in wheat. In precious study, One major QTL taft was located on linkage group of chromosome 2DS by SSR marker analysis. To fine mapping the major QTL, the genetic diversity between XND126 and 59 varieties of common wheat were studied using 14 SSR markers on chromosome 2DS reference map, among which, 12 varieties, showed higher polymorphism with XND126 than others, were selected as hybrid parents to construct new QTL analysis population for fine mapping. The result also showed that the nearest marker （Xbare95） to the major QTL has highest diversity ratio between varieties and the female sterile line.

关 键 词：小麦 雌性不育 SSR标记 遗传多态性 

分 类 号：S512.1[农业科学—作物学]