利用F_2群体估计远缘杂交中不育基因的位置和效应的最大似然法

A maximum likelihood method for estimating the position and effect of sterility genes in remote hybridization of plant using an F_2 population

提出了利用F2群体估计远缘杂交中不育基因位点的位置和效应的一种统计方法.利用共显性标记位点的异常分离,用最大似然法可以对不育基因与标记位点之间的重组值进行估计,还可以同时估计雌雄配子的存活率.给出了重组值和雌雄配子存活率的最大似然估计方法以及估计值的方差和置信区间.

A statistical method for determining the linkage and effect of sterility genes in remote hybridization of plant is developed. The maximum likelihood estimates of the recombination fractions and the viabilities of the male and female gametes can be estimated using codominant markers showing distorted segregation in an F2 population. The process for the estimating of the recombination fractions and the viabilities of gametes are described, and the variances of the estimates and the confidence intervals of the parameters are also presented.