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Asymptotic rates of response from forest tree breeding strategies using best linear unbiased prediction



Asymptotic rates of response from forest tree breeding strategies using best linear unbiased prediction



Tag. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik 96(3-4): 484-493



Genetic gain equations are developed for selection on multiple traits using either multi- or univariate best linear unbiased predictors (BLUP) and for selection under controlled and open pollination and polymix mating schemes. The equations assume an infinite population and account for the effects of selection. A comparison with simulated populations under the same mating schemes show that the gain equations predict selection response well, with the predictions having some upward bias. The gain equations are used to compare across mating schemes, to compare univariate to multivariate analyses, and to measure the reduction in the rate of genetic gain due to selection disequilibrium. Results show controlled pollination schemes can offer as much as a 56% advantage in genetic gain relative to open pollination. The reduction in the rate of genetic gain due to selection disequilibrium is approximately 27% under controlled pollination for the breeding goals studied. The results show a limited benefit in using multivariate analyses for predicting breeding values.

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Accession: 003048562

Download citation: RISBibTeXText

PMID: 24710888

DOI: 10.1007/s001220050765



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