小麦株高性状的QTL定位分析  

QTL mapping for plant height of wheat

作　　者：章珍[1,2] 翟洪翠[1,2] 王华忠[1,2] 

机构地区：[1]天津师范大学生命科学学院,天津300387 [2]天津师范大学天津市细胞遗传与分子调控重点实验室,天津300387

出　　处：《天津师范大学学报（自然科学版）》2011年第2期73-76,81,共5页Journal of Tianjin Normal University：Natural Science Edition

基　　金：天津市自然科学基金资助项目(08JCYBJC5000);天津市高等学校科技发展基金资助项目(20070916)

摘　　要：以国际小麦作图组织的重组自交系群体W7984×Opata85为材料,在两种不同试验环境(2009年天津东丽区、2009年天津西青区姚村)下,分析其亲本及114个株系群体的株高,并利用QTL作图软件WinQTLCart2.5和区间作图及复合区间作图方法,对控制小麦株高性状的QTL进行定位.共检测到4个与小麦株高相关的QTLs,分别位于1A,3D,4A和7A染色体上,其中位于3D染色体上的QTL贡献最大,可以解释株高变异的10.3%～14.8%.A population of 114 RILs lines from the cross of W7984×Opata85 was used for wheat plant height genetic analysis and QTL mapping.The genetic linkage map was based on the 461 segregation markers in this population published online.With the QTL mapping software WinQTLCart2.5 and the methods of interval mapping and composite interval mapping,4 putative QTLs related to plant height were detected in this population and respectively located on chromosomes 1A,3D,4A and 7A.The largest contributive locus was identified on chromosome 3D,accounting for 10.3%—14.8% plant height phenotypic variation.

关 键 词：普通小麦 株高 数量性状位点 区间作图 

分 类 号：Q943[生物学—植物学]