Performance of Seven Tree Breeding Strategies Under Conditions of Inbreeding Depression.

ABSTRACT: In the domestication and breeding of tree species that suffer from inbreeding depression (ID), the long-term performance of different breeding strategies is poorly known. Therefore, seven tree breeding strategies including single population, subline, selfing, and nucleus breeding were simulated using a multi-locus model with additive, partial, and complete dominance allele effects, and with intermediate, U-shaped, and major allele distributions. The strategies were compared for genetic gain, inbreeding accumulation, capacity to show ID, the frequencies and fixations of unfavorable alleles, and genetic variances in breeding and production populations. Measured by genetic gain of production population, the nucleus breeding and the single breeding population with mass selection strategies wer

SUBMITTER: Wu HX 

PROVIDER: S-EPMC4777116 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature