玉米隐性矮秆突变体的遗传分析与初步定位Genetic analysis and linkage mapping of a recessive dwarf mutant in maize
戚洪源;李卫华;付志远;丁冬;胡彦民;汤继华;
摘要(Abstract):
利用3个回交后代分离群体结合混合分群法,对发现的玉米矮秆平展叶突变体的遗传机理进行了初步分析.结果表明,该突变体主要是由于植株节间长缩短而导致株高降低,同时穗上叶夹角接近直角,表现为典型的一因多效作用.遗传分析结果表明,该材料的株高与叶夹角变异由1对隐性基因控制.利用SSR标记将该基因定位在玉米第3染色体的3.05 bin,位于SSR标记umc2265和umc2166之间,遗传距离分别为2.5和5.4 cM.
关键词(KeyWords): 玉米;矮秆突变体;遗传分析;基因定位
基金项目(Foundation): 河南省重大公益性科研项目(121100110300);; 河南省重大科技专项(121100110300)
作者(Authors): 戚洪源;李卫华;付志远;丁冬;胡彦民;汤继华;
DOI: 10.16445/j.cnki.1000-2340.2013.03.017
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