玉米单穗粒质量的遗传模型分析  

Genetic model analysis of maize single spike kernel weight

作　　者：进茜宁[1,2] 张怀胜 王铁固[1,2] 吴向远 陈士林[1,2] JIN Xining;ZHANG Huaisheng;WANG Tiegu;WU Xiangyuan;CHEN Shilin(College of Life Science and Technology,Henan Institute of Science and Technology,Xinxiang453003,China;Henan Collaborative Innovation Center of Modern Biological Breeding,Xinxiang453003,China)

机构地区：[1]河南科技学院生命科技学院,河南新乡453003 [2]现代生物育种河南省协同创新中心,河南新乡453003

出　　处：《河南科技学院学报（自然科学版）》2018年第5期17-21,共5页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：河南省高等学校重点科研项目计划项目(16B210002);河南科技学院高层次人才计划(2015007)

摘　　要：为了探究玉米单穗粒质量的遗传规律,为选育高产玉米新品种提供参考,以3个玉米组合(组合I:B53/PH6WC;组合Ⅱ:B53/H58;组合Ⅲ:2394/PH6WC)的六世代群体为材料,采用主基因+多基因混合遗传模型分析的方法,对玉米单穗粒质量的遗传特性进行剖析.结果表明:组合I符合D2模型(1对加性主基因+加性-显性多基因模型),以主基因遗传为主,并且在F2世代选择效率最高;组合Ⅱ符合E1模型(2对加性-显性-上位性主基因+加性-显性对基因混合遗传模型),在不同的分离世代检测到的基因特征差异很大;组合Ⅲ符合E0模型(2对加性-显性-上位性主基因+加性-显性-上位性多基因混合遗传模型),分离世代的平均主基因遗传率为52.8%,在F2世代选择效率最高.：In this study,the joint segregation analysis of major genes plus polygenes mixed inheritance model was conducted to explore the genetic mechanism of maize single ear grain weigh,using six generations （P1,P2,F1,B1,B2 and F2） of three maize combinations, B53/PH6WC （Cross I ）,B53/H58 （CrossⅡ ） and 2394/PH6WC （Cross Ⅲ）.The results showed that the optimal model was model D2 in Cross I.It had the highest heritability of major genes in F2 generation of cross I.Cross Ⅱ was model El.The performance was varied in different generation.Cross Ⅲ was model Eo,the average heritability of major genes in segregating generation was 52.8%,and F2 generation was the highest one.

关 键 词：玉米 单穗粒质量 主基因+多基因 遗传模型 

分 类 号：S513[农业科学—作物学]