A method for partitioning trends in genetic mean and variance to understand breeding practices.

ABSTRACT:

Background

In breeding programmes, the observed genetic change is a sum of the contributions of different selection paths represented by groups of individuals. Quantifying these sources of genetic change is essential for identifying the key breeding actions and optimizing breeding programmes. However, it is difficult to disentangle the contribution of individual paths due to the inherent complexity of breeding programmes. Here we extend the previously developed method for partitioning genetic mean by paths of selection to work both with the mean and variance of breeding values.

Methods

First, we extended the partitioning method to quantify the contribution of different paths to genetic variance assuming that the breeding values are known. Second, we combined the partitioning

SUBMITTER: Oliveira TP 

PROVIDER: S-EPMC10236722 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature