Modeling additive and non-additive effects in a hybrid population using genome-wide genotyping: prediction accuracy implications.

ABSTRACT: Hybrids are broadly used in plant breeding and accurate estimation of variance components is crucial for optimizing genetic gain. Genome-wide information may be used to explore models designed to assess the extent of additive and non-additive variance and test their prediction accuracy for the genomic selection. Ten linear mixed models, involving pedigree- and marker-based relationship matrices among parents, were developed to estimate additive (A), dominance (D) and epistatic (AA, AD and DD) effects. Five complementary models, involving the gametic phase to estimate marker-based relationships among hybrid progenies, were developed to assess the same effects. The models were compared using tree height and 3303 single-nucleotide polymorphism markers from 1130 cloned individuals obtained via

SUBMITTER: Bouvet JM 

PROVIDER: S-EPMC4806881 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature