普通小麦株高的遗传分析  

Mapping QTLs for Plant Height of Common Wheat

作　　者：吴旭江[1] 程凯[1] 臧淑江[1] 张伯桥[1,2] 

机构地区：[1]江苏里下河地区农业科学研究所/农业部长江中下游小麦生物学与遗传育种重点实验室,扬州225007 [2]江苏省现代作物生产协同创新中心,扬州225007

出　　处：《吉林农业大学学报》2016年第3期274-280,共7页Journal of Jilin Agricultural University

基　　金：江苏省自然科学基金青年基金项目(BK20130457);扬州市2014自然科学基金面上项目(YZ2014067);江苏省农业科技自主创新资金项目[CX(14)2002]

摘　　要：利用小麦扬麦9号和CI12633构建了184个重组自交系群体,利用双亲间多态的212个SSR标记绘制分子连锁图谱,图谱总长1 567.2 CM,标记间平均距离8.2 CM。在3年9次条件下对株高性状进行鉴定,利用复合区间作图法监测到6个株高QTL,它们分别位于1D、2A、2B、3A和5A染色体上,其中位于2B染色体上的QTL来自品种CI12633,其余5个QTL均来自矮杆亲本扬麦9号,单个QTL能够解释4.13%-17.44%的表型变异,每个环境条件下检测到的所有QTL能解释29.46%-46.46%的表型变异,5A染色体上的QTL在9次试验环境下均能被检测出来,同时其效应也是最大的QTL,说明这个QTL能够在育种中被利用。A molecular linkage map for wheat hybrid of cross between Yangmai 9# and CI12633 was constructed by using 212 SSR markers. The total map length was 1 567. 2 CM with an average interval of 8. 2 CM. Composite interval mapping was used to identify plant height（ PH） QTL at 9 environments based on phenotypic data of 184 RIL families. Finally 6 PH relevant QTLs were identified on chromosome 1D,2A,2B,3A and 5A,respectively. QTL on chromosome 2B came from CI12633,and the other QTLs from Yangmai 9. Each QTL was able to explain phenotypic by4. 13%—17. 44%. In each environment,the total putative QTLs explained about 29. 46%—46. 46%of the total phenotypic variation. QTL on chromosome 5A was detected in three years and could be utilized in breeding.

关 键 词：普通小麦 株高 数量性状位点 

分 类 号：S512.032[农业科学—作物学]