选择作用下世代间方差和选择反应变化的研究  

The Study on the Change of Variances and Selection Responses during the Generations of Selection

作　　者：苏国生[1] 张力[1] 

机构地区：[1]福建农学院畜牧兽医系,福州350002

出　　处：《黄牛杂志》1992年第1期15-18,共4页Journal of Yellow Cattle Science

摘　　要：通过计算机模拟实验,研究表型选择下世代间方差和选择反应的变化。结果表明,性状遗传力越高,每一世代的选择反应越大,方差和选择反应下降越快。有利基因的频率越高,每一世代的选择反应越小,方差和选择反应下降越快。The computer simulation experiment has been conducted to study the change of variances and selection responses during the generations of the selection by phenotypic values. The results show that the higher the heritabilities of the characters are, the larger the responses are in each generation and the more rapidly the variances and responses decrease. The greater the freqencies of favorable genes are, the less the responses are in each genration and the more quickly the variances and responses low down.

关 键 词：表型选择 选择反应 遗传力 家畜 

分 类 号：S813.2[农业科学—畜牧学]