作物学报 ›› 2013, Vol. 39 ›› Issue (09): 1521-1529.doi: 10.3724/SP.J.1006.2013.01521
• 作物遗传育种·种质资源·分子遗传学 • 下一篇
李清超1,2,5,李永祥1,杨钊钊1,刘成3,刘志斋4,李春辉1,彭勃1,张岩1,王迪1,谭巍巍1,孙宝成3,石云素1,宋燕春1,张志明2,潘光堂2,*,黎裕1,王天宇1,*
LI Qing-Chao1,2,LI Yong-Xiang1,YANG Zhao-Zhao1,LIU Cheng3,LIU Zhi-Zhai4,LI Chun-Hui1,PENG Bo1,ZHANG Yan1,WANG Di1,TAN Wei-Wei1,SUN Bao-Cheng3, SHI Yun-Su1, SONG Yan-Chun1, ZHANG Zhi-Ming2, PAN Guang-Tang2, WANG Tian-Yu1, LI Yu1
摘要:
株高和穗位高是玉米育种中的重要农艺性状。本研究利用我国玉米育种中骨干亲本黄早四与来自不同杂种优势群的其他11个骨干自交系组配11个RIL群体,开展基于单环境、联合环境的QTL分析,分别检测到269个和176个QTL。通过区段整合,检测到21个株高主效QTL及15个穗位高主效QTL,这些QTL分布在第1、第2、第3、第6、第7、第8、第9、第10染色体上。相对于共同亲本黄早四而言,部分QTL在不同RIL群体中的效应方向一致,来自共同亲本黄早四的等位基因在不同群体中能够稳定地表达。同时,还分别定位到在多环境下稳定表达的5个株高、4个穗位高“环境钝感QTL”。此外,进一步鉴定出5个重要的株高和穗位高QTL富集区段(bin 1.01-1.02,1.08-1.11,3.05,8.03-8.05和9.07),这些区段均包含多个株高和穗位高相关QTL,如bin3.05位点包含7个QTL,bin8.03-8.05位点分别包含9个QTL,且这些QTL至少在3个不同环境中能够被检测到,这些区域对QTL的精细定位和克隆有重要参考价值。
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