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Multiple-Trait Genomic Selection Methods Increase Genetic Value Prediction Accuracy

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Jia, Yi, Jannink, Jean-Luc·2012·Genetics

Abstract

Genetic correlations between quantitative traits measured in many breeding programs are pervasive. These correlations indicate that measurements of one trait carry information on other traits. Current single-trait (univariate) genomic selection does not take advantage of this information. Multivariate genomic selection on multiple traits could accomplish this but has been little explored and tested in practical breeding programs. In this study, three multivariate linear models (i.e., GBLUP, BayesA, and BayesCπ) were presented and compared to univariate models using simulated and real quantitative traits controlled by different genetic architectures. We also extended BayesA with fixed hyperparameters to a full hierarchical model that estimated hyperparameters and BayesCπ to impute missing phenotypes. We found that optimal marker-effect variance priors depended on the genetic architecture of the trait so that estimating them was beneficial. We showed that the prediction accuracy for a low-heritability trait could be significantly increased by multivariate genomic selection when a correlated high-heritability trait was available. Further, multiple-trait genomic selection had higher prediction accuracy than single-trait genomic selection when phenotypes are not available on all individuals and traits. Additional factors affecting the performance of multiple-trait genomic selection were explored.

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Metadata

Authors
Jia, Y., & Jannink, J.-L.
Venue
Genetics
Published
2012-12-01
Volume
192
Issue
4
Pages
1513-1522
ISSN
  • 0016-6731 (ISSN-L)
  • 1943-2631
OpenAlex
W2157313957
Cited by
498
References
16
FWCI
6.20
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Multiple-Trait Genomic Selection Methods Increase Genetic Value Prediction Accuracy. https://app.cochat.ai/papers/10.1534/genetics.112.144246
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Jia, Y., & Jannink, J.-L. (2012). Multiple-Trait Genomic Selection Methods Increase Genetic Value Prediction Accuracy. Genetics. https://doi.org/10.1534/genetics.112.144246

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