作物学报 ›› 2013, Vol. 39 ›› Issue (03): 455-463.doi: 10.3724/SP.J.1006.2013.00455
张伟强1,2,库丽霞2,张君2,韩赞平2,3,陈彦惠2,*
ZHANG Wei-Qiang1,2,KU Li-Xia2,ZHANG Jun2,HAN Zan-Ping2,3,CHEN Yan-Hui2,*
摘要:
为研究玉米出籽率、籽粒深度、百粒重的遗传机制,以豫82×沈137组配的229个F2:3家系为试验材料,采用复合区间作图法进行QTL定位分析。在3个环境下共检测到10个QTL。其中,控制出籽率、籽粒深度、百粒重相关QTL分别为3个、3个和4个,它们的联合贡献率分别为35.5%、28.1%和39.0%。位于第1染色体上介于标记umc1335与umc2236之间控制出籽率的QTL qKR1b和位于第9染色体上介于标记bnlg1209–umc2095之间控制百粒重QTL q100-KW9b,分别解释18.9%和11.7%的表型变异,且作用方式为加性效应,分析表明这些区域可能包含调控玉米籽粒性状关键基因,对剖析玉米产量形成机制具有重要的参考价值。
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