利用家系群体鉴定数量性状多基因的存在  

Identification of the Existence of Polygenes for Mixed Major Gene and Polygenes Inheritance Model of Quantitative Traits by using B_(1:2) and B_(2:2) or F_(2:3) Families

作　　者：章元明[1] 盖钧镒[1] 戚存扣[1] 

机构地区：[1]农业部国家大豆改良中心

出　　处：《生物数学学报》2001年第1期96-102,共7页Journal of Biomathematics

基　　金：国家973项目

摘　　要：通过重复试验方差分析获得误差方差以探索只利用Ｂ１：２和Ｂ２．２或Ｆ２：３家系世代鉴定多基因存在的方法．混合分布参数的估计采用ＩＥＣＭ算法．以油菜株高Ｂ１：２和Ｂ２：２家系平均数资料和千粒重Ｆ２：３家系平均数资料为例阐明该方法．After environmental variance for replication experiment was estimated by analysis of variance, the likelihood ratio test was used to identify the existence of polygenes for B1:2 and B2:2 or F2:3 families. The iterated ECM(IECM) algorithm was used to obtain maximum likelihood estimates of the parameters in sample likelihood function. An example of the genetic analysis of plant height and weight per 1000 seeds of a rape cross was used to illuminate the above procedure.

关 键 词：数量性状 主基因+多基因混合遗传 IECM算法 家系群体 作物 

分 类 号：S33[农业科学—作物遗传育种] Q348[农业科学—农艺学]