利用种子性状QTL定位高油玉米蛋白质含量QTL  

QTL Analysis of Protein Content in High-oil Maize Using Seed Trait QTL Explorer

作　　者：李学慧[1] 申顺先[1] 李玉玲[2] 曹雯梅[1] 杜红[1] 

机构地区：[1]河南农业职业学院,河南中牟451450 [2]河南农业大学农学院,河南郑州450002

出　　处：《作物杂志》2011年第4期40-42,共3页Crops

基　　金：河南省科技攻关项目(0424020025)

摘　　要：利用普通玉米自交系8984与高油玉米自交系GY220为亲本构建了284个F2∶3家系群体及含有185个SSR标记的玉米遗传连锁图谱。通过包含母体效应的种子性状QTL作图方法对玉米子粒蛋白质含量进行定位和效应分析,共检测到4个QTL,位于第5和第8染色体上。除qPRO8-2遗传作用方式表现为加性外,其余QTL作用方式均为部分显性。单个QTL贡献率为3.86%~5.17%,累计贡献率为18.54%。所有QTL的增效基因均来自高油亲本GY220。F2∶ 3 populations consisted of 284 plants were developed from the cross between a normal maize inbred ＂8984＂ and a high-oil maize inbred ＂GY220＂,and a genetic linkage map including 185 SSR markers was constructed.The quantitative trait loci（QTL） of protein content were identified and their effects were evaluated using SeedTraitQTL software which can deal with maternal effect.A total of four QTLs were detected in the F2∶ 3 population,which were located on chromosome 5 and 8 respectively.Three QTLs showed partially dominant effects but qPRO8-2 showed additive.Contribution of single QTL to phenotypic variation varied from 3.86% to 5.17%,and total contributions of all QTLs were 18.54%

关 键 词：高油玉米 蛋白质含量 种子性状QTL QTL定位 

分 类 号：S513[农业科学—作物学]