利用闭合三角形杂交群体检测玉米株高的QTL  

QTL Mapping for Plant Height of Maize( Zea mays L. )Using Closed Triangle Cross Populations

作　　者：苏顺宗[1] 张啸[1] 吴玲[1] 刘丹[1] 

机构地区：[1]四川农业大学成都校区,四川成都611130

出　　处：《西南农业学报》2013年第4期1322-1326,共5页Southwest China Journal of Agricultural Sciences

基　　金：四川省青年科技基金(2010JQ0044)

摘　　要：株高性状是复杂的数量性状，研究株高性状的遗传可为玉米的高产和商抗育种提供重要的参考信忠。本研究用玉米自交系‘黄早四’、‘478’和S37构建闭合三角形杂交群体，构建了3个连锁图谱。在杨凌、雅安2个试验点对3个B：4群体的玉米株高进行测定，利用复合区间作图法进行grL定位，共检测到27个g儿，其中包括16个主效gIL。多重验证发现，5个QTL即Ph3—1、Ph6-2、Ph6-3、Ph8—1、Ph9-2的熏演性较高，其中，Ph3．1（bin3．04—3．05）、Ph6-3（bin6．06）、Ph9-2（bin9．04）解释表型的贡献率分别高达19．78％、11．74％和33．89％，可以确定为重要的主效Q’IL。Plant height was a complex quantitative trait, and the research on the genetic of plant height could provide important information for high yield breeding and high resistance breeding in maize. Closed triangle cross populations were developed using Huangzao4, ＇478＇ and S37, and three linkage maps were constructed for QTL mapping. Plant height of three F2：4 populations were measured at Yangling and Ya＇ an respectively. Based on the method of Composite Interval Mapping, 27 QTLs were detected including 16 major QTI~. Five QTLs（Ph3-1, Ph6-2, Ph6-3, Ph8 -1, Ph9-2） were reproducible in the process of muti-verification. Among them, Ph3 -1 （ bin3.04 - 3.05 ）, Ph6-3 （ bin6. 06）, Ph9-2 （ hing. 04） might he considered as the important major QTLs with great contribution of 19.78 %, 11.74 % and 33.89 % to plant height.

关 键 词：玉米 闭合三角形杂交群体 株高 SSR QTL 

分 类 号：S513[农业科学—作物学]