作物研究Issue(2)：111-116,6.DOI:10.3969/j.issn.1001-5280.2015.02.01
2套半同胞籼粳交重组自交系粒形性状的相关和遗传分析
Genetic and Correlation Analysis of the Grain Shape Traits with Two Set of Half-Sib Reco mbinant Inbred Lines D e rived fro m Indica/Japonica Rice Cross
摘要
Abstract
Two sets of half-Sib recombinant inbred lines (RILs),which with the japonica cultivar Nipponbare (NPB)as the common genetic background and crossed donor parents with different grain shape,were developed to research the genet-ic of grain shape traits.The frequency distribution of the grain shape traits including grain length (GL),grain width (GW) and grain thickness (GT)of rice seed harvested from the two sets of RILs were analyzed.The results showed that all the grain shape traits showed continuous distribution with single or multi peak.By using the mixed inheritance model with ma-jor genes plus polygenes,genetic analysis of the three grain shape traits of the sets of RILs were conducted.Genetic analysis showed that GL was controlled by two independent major genes with epistatic dominance plus polygenes,GW was controlled by two independent major genes with duplicate effect,GT was controlled by two linkage major genes with equal additive effect.In the NPB/R1 126 RILs,GL was controlled by two major genes with complementary or inhibiting effect plus poly-genes,GW was controlled by two independent major genes,whereas,GT was controlled by four major genes plus poly-genes.The above results would provide useful information for the further gene mapping of grain shape traits with the two sets of RILs.关键词
水稻/半同胞/重组自交系/粒形性状/遗传模型Key words
rice/half-Sib/recombinant inbred lines/grain shape trait/genetic model分类
农业科技引用本文复制引用
叶乃忠,曾盖,唐伟,肖应辉..2套半同胞籼粳交重组自交系粒形性状的相关和遗传分析[J].作物研究,2015,(2):111-116,6.基金项目
教育部创新团队发展计划项目（IRT1239）；湖南省高校科技创新团队支持计划项目。 （）
