Yamada Y
Genetics. 1977 Aug;86(4):885-99. doi: 10.1093/genetics/86.4.885.
The theoretical basis and computational procedures for estimating the culling variate utilized by breeders in actual selection are presented. The essential part of this procedure is to derive the unknown culling variate in terms of a linear combination of traits based on realized indirect selection differentials of those traits and phenotypic variances and covariances among traits in the population. Special emphasis is placed on the distribution of the variables involved. The accuracy of the culling variates is estimated by use of the biserial correlation with some modifications. Numerical illustrations are given for different types of selection.
本文介绍了育种者在实际选择中使用的淘汰变量估计的理论基础和计算程序。该程序的关键部分是根据性状的实际间接选择差异以及群体中性状间的表型方差和协方差，通过性状的线性组合来推导未知的淘汰变量。特别强调了所涉及变量的分布。通过对双列相关进行一些修改来估计淘汰变量的准确性。给出了不同类型选择的数值示例。
