Benefit of Introgression Depends on Level of Genetic Trait Variation in Cereal Breeding Programmes.

ABSTRACT: We investigated the benefit from introgression of external lines into a cereal breeding programme and strategies that accelerated introgression of the favourable alleles while minimising linkage drag using stochastic computer simulation. We simulated genomic selection for disease resistance and grain yield in two environments with a high level of genotype-by-environment interaction (G × E) for the latter trait, using genomic data of a historical barley breeding programme as the base generation. Two populations (existing and external) were created from this base population with different allele frequencies for few (N = 10) major and many (N ~ 990) minor simulated disease quantitative trait loci (QTL). The major disease QTL only existed in the external population and lines from

SUBMITTER: Li Y 

PROVIDER: S-EPMC9240786 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature