作者
Omnia Gamal El-Dien, Blaise Ratcliffe, Jaroslav Klápště, Ilga Porth, Charles Chen, Yousry A El-Kassaby
发表日期
2016/3/1
期刊
G3: Genes, Genomes, Genetics
卷号
6
期号
3
页码范围
743-753
出版商
Oxford University Press
简介
The open-pollinated (OP) family testing combines the simplest known progeny evaluation and quantitative genetics analyses as candidates’ offspring are assumed to represent independent half-sib families. The accuracy of genetic parameter estimates is often questioned as the assumption of “half-sibling” in OP families may often be violated. We compared the pedigree- vs. marker-based genetic models by analysing 22-yr height and 30-yr wood density for 214 white spruce [Picea glauca (Moench) Voss] OP families represented by 1694 individuals growing on one site in Quebec, Canada. Assuming half-sibling, the pedigree-based model was limited to estimating the additive genetic variances which, in turn, were grossly overestimated as they were confounded by very minor dominance and major additive-by-additive epistatic genetic variances. In contrast, the implemented genomic pairwise realized …
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O Gamal El-Dien, B Ratcliffe, J Klápště, I Porth, C Chen… - G3: Genes, Genomes, Genetics, 2016