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Additive and non-additive genetic variance in juvenile Sitka spruce (Picea sitchensis Bong. Carr)
Many quantitative genetic models assume that all genetic variation is additive because of a lack of data with sufficient structure and quality to...
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Influence of the mating design on the additive genetic variance in plant breeding populations
Key messageMating designs determine the realized additive genetic variance in a population sample. Deflated or inflated variances can lead to reduced...
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Investigating the impact of non-additive genetic effects in the estimation of variance components and genomic predictions for heat tolerance and performance traits in crossbred and purebred pig populations
BackgroundNon-additive genetic effects are often ignored in livestock genetic evaluations. However, fitting them in the models could improve the...
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The long-term effects of genomic selection: 1. Response to selection, additive genetic variance, and genetic architecture
BackgroundGenomic selection has revolutionized genetic improvement in animals and plants, but little is known about its long-term effects. Here, we...
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Genomic dissection of additive and non-additive genetic effects and genomic prediction in an open-pollinated family test of Japanese larch
Genomic dissection of genetic effects on desirable traits and the subsequent use of genomic selection hold great promise for accelerating the rate of...
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Implications of additive × additive epistasis for common bean breeding
The presence of epistasis in complex traits can be significant and affect the selection of segregating populations undesirably. The purpose of this...
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Growth rate and efficiency-related traits in Kermani lambs: estimations of (co)variance components and genetic parameters
Using Kermani sheep, the current study estimated (co)variance components and genetic parameters for average daily gain, Kleiber’s ratio, growth...
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Genomic prediction with non-additive effects in beef cattle: stability of variance component and genetic effect estimates against population size
BackgroundGenomic prediction is now an essential technology for genetic improvement in animal and plant breeding. Whereas emphasis has been placed on...
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A method for partitioning trends in genetic mean and variance to understand breeding practices
BackgroundIn breeding programmes, the observed genetic change is a sum of the contributions of different selection paths represented by groups of...
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Equivalence of variance components between standard and recursive genetic models using LDL′ transformations
BackgroundRecursive models are a category of structural equation models that propose a causal relationship between traits. These models are more...
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Investigating the impact of paternal age, paternal heat stress, and estimation of non-genetic paternal variance on dairy cow phenotype
BackgroundLinear models that are commonly used to predict breeding values in livestock species consider paternal influence solely as a genetic...
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Estimation of nonadditive and additive genetic effects on growth traits of Horro cattle
The estimation of nonadditive genetic effects plays a significant role in the accuracy of estimated breeding values for growth traits. Data for...
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Preponderance of additive and non-additive variances for growth, ecophysiological and wood traits in Eucalyptus hybrid genotype-by-spacing interaction
The objective of this study was to better understand the underlying gene action in eucalyptus, under different plantation densities, for a different...
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The effect of repeated measurements and within-individual variance on the estimation of heritability: a simulation study
AbstractThe estimation of heritability is a common practice in the field of ecology and evolution. Heritability of the traits is often estimated...
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Rapid evolution of sexual size dimorphism facilitated by Y-linked genetic variance
Sexual dimorphism is ubiquitous in nature but its evolution is puzzling given that the mostly shared genome constrains independent evolution in the...
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Genetic and environmental determinants of bone quality: a cross-sectional analysis of the Hungarian Twin Registry
There is abundant evidence that bone mineral content is highly heritable, while the heritability of bone quality (i.e. trabecular bone score [TBS]...
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Evaluation of reciprocal F1 crosses of Fayoumi with two exotic chicken breeds 2: additive and non-additive effects on egg quality traits
The current study evaluates additive and non-additive genetic variances for egg quality traits in six genotypes generated through pure mating and...
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Genetic Variances of Quantitative Traits
Broad-sense heritability and narrow-sense heritability are defined in the beginning of the chapter. Under the assumption of Hardy-Weinberg...
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Genetic dissection of additive and epistatic quantitative trait loci controlling pod number per plant in peanut (Arachis hypogaea L.)
Pod number per plant (PN) is an important yield component trait in peanut. This study used a recombinant inbred line (RIL) population consisting of...
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Improvement of genomic prediction in advanced wheat breeding lines by including additive-by-additive epistasis
Key messageIncluding additive and additive-by-additive epistasis in a NOIA parametrization did not yield orthogonal partitioning of genetic...
