Theory of Heterosis
Theory of Heterosis
复制标题
杂种优势理论
DOI：
10.3168/jds.s0022-0302(85)81117-6
复制
发表时间：
1985
影响因子：
3.5
通讯作者：
E. Pollak
中科院分区：
文献类型：
--
作者：
R. L. William;E. Pollak
杂种优势理论是用简单的遗传模型来表达的。相关的人口平均值推导出人口之间的基因频率的差异。单位点双等位基因模型的杂种优势是基因频率差异的平方乘以显性偏差的函数。对于两个基因座和两个等位基因的模型，杂种优势也包含加性上位项。F2代或相似杂交种间交配的遗传损失是基因座间重组率、基因频率差异、加性-加性和显性-显性上位效应的函数。
Abstract The theory of heterosis is expressed by simple genetic models. Relevant population means are deduced for differences in gene frequencies among populations. Heterosis for the one-locus, two-allele model is a function of the square of the difference in gene frequency multiplied by the dominance deviation. Heterosis, for a model with two loci and two alleles at each, contains an additive by additive epistatic term as well. Recombination loss in the F 2 or the mating of similar crosses interse is a function of the recombination fraction between loci, differences in gene frequencies, and additive by additive and dominance by dominance epistatic effects.