Genomic-based multiple-trait evaluation in Eucalyptus grandis using dominant DArT markers
Jazyk angličtina Země Irsko Médium print-electronic
Typ dokumentu časopisecké články
PubMed
29650154
DOI
10.1016/j.plantsci.2018.03.014
PII: S0168-9452(17)31212-8
Knihovny.cz E-zdroje
- Klíčová slova
- Accuracy, Combined approach, Eucalyptus grandis, Genetic parameters, Multiple-trait individual-tree mixed model,
- MeSH
- Eucalyptus genetika růst a vývoj MeSH
- genetické markery genetika MeSH
- genomika MeSH
- kvantitativní znak dědičný * MeSH
- modely genetické MeSH
- rodokmen MeSH
- šlechtění rostlin metody MeSH
- stonky rostlin anatomie a histologie růst a vývoj MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- genetické markery MeSH
We investigated the impact of combining the pedigree- and genomic-based relationship matrices in a multiple-trait individual-tree mixed model (a.k.a., multiple-trait combined approach) on the estimates of heritability and on the genomic correlations between growth and stem straightness in an open-pollinated Eucalyptus grandis population. Additionally, the added advantage of incorporating genomic information on the theoretical accuracies of parents and offspring breeding values was evaluated. Our results suggested that the use of the combined approach for estimating heritabilities and additive genetic correlations in multiple-trait evaluations is advantageous and including genomic information increases the expected accuracy of breeding values. Furthermore, the multiple-trait combined approach was proven to be superior to the single-trait combined approach in predicting breeding values, in particular for low-heritability traits. Finally, our results advocate the use of the combined approach in forest tree progeny testing trials, specifically when a multiple-trait individual-tree mixed model is considered.
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