利用P_1、F_1、P_2、F_2和F_(2:3)家系五世代联合分离分析的拓展  

An Expansion of the Joint Segregation Analysis of P_1、 F_1、 P_2、F_2 and F_(2:3) Generations in the Mixed Major Gene Plus Polvgenes Inheritance Analysis of Quantitative Traits

作　　者：章元明[1] 盖钧镒 

机构地区：[1]南京农业大学大豆研究所 [2]国家大豆改良中心,江苏南京210095

出　　处：《生物数学学报》2002年第3期363-368,共6页Journal of Biomathematics

基　　金：江苏省自然科学基金项目;国家973项目和重庆市科委应用基础研究项目

摘　　要：在王建康等[3]的基础上拓展了利用P1、F1、P2、F2和F2:3家系5群体的2对主基因（B）和 2对主基因+多基因（E）2类模型.为使拓展模型成为可能并提高分布参数估计值的精度,用IECM算法估计样本似然函数分布参数.通过重新分析3个大豆杂交组合抗豆秆黑潜蝇主茎虫量遗传资料证实了通过孟德尔氏遗传分析法所获得的结果,并得到存在多基因的统计学依据.Two major genes model (Model B) and two major genes plus polygenes model (Model E) of major gene plus polygene mixed inheritance of quantitative traits for a joint analysis of P1 , F1 , P2 , F2 and p2:3 are extended to based on Wang and Gai (1998). The major steps are the same as that of Wang and Gai (1998). The parameters of component, distributions in sample likelihood function are estimated through the iterated ECM (IECM) algorithm. In the end. the inheritance of resistance to beanfly (Melanagromyza sojae Zehntner) of three soybean crosses is given to explain the above procedures, the results in Wei et al (1989), and Gai and Wang (1998) are further confirmed.

关 键 词：P1 F1 P2 F2 F2:3家系 五世代联合分离分析 主基因+多基因混合遗传 IECM算法 数量性状 大豆 豆秆黑潜蝇 

分 类 号：Q348[生物学—遗传学]