利用单核苷酸多态性标记定位玉米叶夹角主效QTLGenetic analysis for leaf angle in maize
张沁斌,秦永田,许蒙蒙,陈永强,李卫华,付志远
摘要(Abstract)：
对EMS诱变获得的平展叶夹角突变体M 87-1的遗传规律进行了标记分析。结果表明,在豫82背景影响下,M 87-1与豫82组配的分离群体的叶夹角表现典型的数量性状遗传。在3 072个单核苷酸多态性(Single nucleotide polymorphisms,SNPs)标记中,共检测到1 254个SNPs在双亲间存在多态性。通过简化的数量性状位点(Quantitative trait locus,QTLs)分析方法,对BC1((豫82×M 87-1)×M 87-1)分离群体的叶夹角性状进行遗传定位,共检测到3个主效QTLs,分别位于第1,2,7染色体上,其中位于第7染色体上的QTL与叶夹角表型拟合程度最高,可能包含EMS诱变的突变位点。
关键词(KeyWords)： 玉米;叶夹角;主效QTL;单核苷酸多态性
基金项目(Foundation): 省部共建小麦玉米作物学国家重点实验室项目(SKL2014ZH-09)
作者(Author): 张沁斌,秦永田,许蒙蒙,陈永强,李卫华,付志远
DOI: 10.16445/j.cnki.1000-2340.2016.02.002
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