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当前位置: 首页 > 文章 > 玉米株高和穗位高的QTL定位 河南农业科学 2019 (6) 20-25
Position: Home > Articles > 玉米株高和穗位高的QTL定位 Journal of Henan Agricultural Sciences 2019 (6) 20-25

玉米株高和穗位高的QTL定位

作  者：
尤诗婷;邓策;李会敏;吕蒙;李志敏;刘惠芬
单  位：
天津农学院农学与资源环境学院
关键词：
玉米;株高;穗位高;QTL定位
摘  要：
为了鉴定株高、穗位高QTL的主效位点,利用高密度的SNP(单核苷酸多态性)连锁图谱和包含共同亲本的2个BC2F5群体,采用完备区间作图法对2个环境下的玉米株高和穗位高QTL进行分析.结果表明,BC2F5群体株高和穗位高存在广泛的变异;株高和穗位高性状受基因控制,同时受环境、基因型*环境互作的影响.在2个BC2F5群体中共检测到6个株高QTL和7个穗位高QTL,表型贡献率为8.36%~33.28%.影响株高、穗位高的主效QTLqPH2-2、qEH2-5均位于第2染色体Bin2.03~2.04区,表型贡献率分别为29.55%、31.86%.
作  者：
YOU Shiting;DENG Ce;LI Huimin;Lü Meng;LI Zhimin;LIU Huifen;College of Agronomy and Resource Environment,Tianjin Agricultural University;College of Agronomy,Henan Agricultural University;
单  位：
YOU Shiting%DENG Ce%LI Huimin%Lü Meng%LI Zhimin%LIU Huifen%College of Agronomy and Resource Environment,Tianjin Agricultural University%College of Agronomy,Henan Agricultural University
关键词：
Maize;;Plant height;;Ear height;;QTL mapping
摘  要：
In order to identify the major quantitative trait loci(QTL) of plant height and ear height in maize,high-density SNP(Single nucleotide polymorphisms) linkage map and two BC_2F_5 populations containing common parents were used to analyze the plant height and ear height QTLs under two environments using inclusive composite interval mapping method.The results showed that the phenotypic variation of plant height and ear height was extensive in BC_2F_5 population;plant height and ear height traits were controlled by gene,and affected by environment and interaction of genotype and environment.A total of six plant height QTLs and seven ear height QTLs were detected in the two BC_2F_5 populations,and phenotypic contribution rate was 8.36%—33.28%.The main QTLs qPH2-2 and qEH2-5 which affected plant height and ear height were located in the Bin2.03—2.04 region of chromosome 2,and their phenotypic contribution rates were 29.55% and 31.86%,respectively.

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