AustralieFrV1, PubMed, Corpus, bibRecord, 002491

Performance of Seven Tree Breeding Strategies Under Conditions of Inbreeding Depression.

Identifieur interne : 002491 ( PubMed/Corpus ); précédent : 002490; suivant : 002492

Performance of Seven Tree Breeding Strategies Under Conditions of Inbreeding Depression.

Auteurs : Harry X. Wu ; Henrik R. Hallingb Ck ; Leopoldo Sánchez

Source :

G3 (Bethesda, Md.) [ 2160-1836 ] ; 2016.

RBID : pubmed:26739644

English descriptors

KwdEn :
- Algorithms, Alleles, Computer Simulation, Gene Frequency, Genetic Variation, Genetics, Population, Genotype, Inbreeding (methods), Inbreeding Depression, Models, Genetic, Selection, Genetic, Trees (genetics).
MESH :
- genetics : Trees.
- methods : Inbreeding.
- Algorithms, Alleles, Computer Simulation, Gene Frequency, Genetic Variation, Genetics, Population, Genotype, Inbreeding Depression, Models, Genetic, Selection, Genetic.

Abstract

In the domestication and breeding of tree species that suffer from inbreeding depression (ID), the long-term performance of different breeding strategies is poorly known. Therefore, seven tree breeding strategies including single population, subline, selfing, and nucleus breeding were simulated using a multi-locus model with additive, partial, and complete dominance allele effects, and with intermediate, U-shaped, and major allele distributions. The strategies were compared for genetic gain, inbreeding accumulation, capacity to show ID, the frequencies and fixations of unfavorable alleles, and genetic variances in breeding and production populations. Measured by genetic gain of production population, the nucleus breeding and the single breeding population with mass selection strategies were equal or superior to subline and single breeding population with within-family selection strategies in all simulated scenarios, in spite of their higher inbreeding coefficients. Inbreeding and cross-breeding effectively decreased ID and could in some scenarios produce genetic gains during the first few generations. However, in all scenarios, considerable fixation of unfavorable alleles rendered the purging performance of selfing and cross-breeding strategies ineffective, and resulted in substantial inferiority in comparison to the other strategies in the long-term.

DOI: 10.1534/g3.115.025767
PubMed: 26739644

Links to Exploration step

pubmed:26739644

Le document en format XML

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<author><name sortKey="Wu, Harry X" sort="Wu, Harry X" uniqKey="Wu H" first="Harry X" last="Wu">Harry X. Wu</name>
<affiliation><nlm:affiliation>Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 87 Umeå, Sweden Commonwealth Scientific and Industry Research Organization (CSIRO), Black Mountain Laboratories, Canberra, ACT 2601, Australia harry.wu@slu.se.</nlm:affiliation>
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<author><name sortKey="Hallingb Ck, Henrik R" sort="Hallingb Ck, Henrik R" uniqKey="Hallingb Ck H" first="Henrik R" last="Hallingb Ck">Henrik R. Hallingb Ck</name>
<affiliation><nlm:affiliation>Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 87 Umeå, Sweden.</nlm:affiliation>
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<author><name sortKey="Sanchez, Leopoldo" sort="Sanchez, Leopoldo" uniqKey="Sanchez L" first="Leopoldo" last="Sánchez">Leopoldo Sánchez</name>
<affiliation><nlm:affiliation>Institut National de la Recherche Agronomique (INRA)-Orleans, Unité d'Amélioration, Génétique et Physiologie des Arbres Forestiers, B. P. 20619, 45166 Olivet Cedex, France.</nlm:affiliation>
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<author><name sortKey="Wu, Harry X" sort="Wu, Harry X" uniqKey="Wu H" first="Harry X" last="Wu">Harry X. Wu</name>
<affiliation><nlm:affiliation>Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 87 Umeå, Sweden Commonwealth Scientific and Industry Research Organization (CSIRO), Black Mountain Laboratories, Canberra, ACT 2601, Australia harry.wu@slu.se.</nlm:affiliation>
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<front><div type="abstract" xml:lang="en">In the domestication and breeding of tree species that suffer from inbreeding depression (ID), the long-term performance of different breeding strategies is poorly known. Therefore, seven tree breeding strategies including single population, subline, selfing, and nucleus breeding were simulated using a multi-locus model with additive, partial, and complete dominance allele effects, and with intermediate, U-shaped, and major allele distributions. The strategies were compared for genetic gain, inbreeding accumulation, capacity to show ID, the frequencies and fixations of unfavorable alleles, and genetic variances in breeding and production populations. Measured by genetic gain of production population, the nucleus breeding and the single breeding population with mass selection strategies were equal or superior to subline and single breeding population with within-family selection strategies in all simulated scenarios, in spite of their higher inbreeding coefficients. Inbreeding and cross-breeding effectively decreased ID and could in some scenarios produce genetic gains during the first few generations. However, in all scenarios, considerable fixation of unfavorable alleles rendered the purging performance of selfing and cross-breeding strategies ineffective, and resulted in substantial inferiority in comparison to the other strategies in the long-term.</div>
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<Abstract><AbstractText>In the domestication and breeding of tree species that suffer from inbreeding depression (ID), the long-term performance of different breeding strategies is poorly known. Therefore, seven tree breeding strategies including single population, subline, selfing, and nucleus breeding were simulated using a multi-locus model with additive, partial, and complete dominance allele effects, and with intermediate, U-shaped, and major allele distributions. The strategies were compared for genetic gain, inbreeding accumulation, capacity to show ID, the frequencies and fixations of unfavorable alleles, and genetic variances in breeding and production populations. Measured by genetic gain of production population, the nucleus breeding and the single breeding population with mass selection strategies were equal or superior to subline and single breeding population with within-family selection strategies in all simulated scenarios, in spite of their higher inbreeding coefficients. Inbreeding and cross-breeding effectively decreased ID and could in some scenarios produce genetic gains during the first few generations. However, in all scenarios, considerable fixation of unfavorable alleles rendered the purging performance of selfing and cross-breeding strategies ineffective, and resulted in substantial inferiority in comparison to the other strategies in the long-term.</AbstractText>
<CopyrightInformation>Copyright © 2016 Wu et al.</CopyrightInformation>
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<CommentsCorrectionsList><CommentsCorrections RefType="Cites"><RefSource>Heredity (Edinb). 1994 Oct;73 ( Pt 4):363-72</RefSource>
<PMID Version="1">7989216</PMID>
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<CommentsCorrections RefType="Cites"><RefSource>Nature. 1991 Aug 8;352(6335):522-4</RefSource>
<PMID Version="1">1865906</PMID>
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<CommentsCorrections RefType="Cites"><RefSource>BMC Genet. 2009;10:70</RefSource>
<PMID Version="1">19895684</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites"><RefSource>PLoS Genet. 2008 Feb;4(2):e1000008</RefSource>
<PMID Version="1">18454194</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites"><RefSource>Genet Sel Evol. 2011;43(1):4</RefSource>
<PMID Version="1">21251244</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites"><RefSource>Theor Appl Genet. 1996 Mar;92(3-4):347-56</RefSource>
<PMID Version="1">24166256</PMID>
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Performance of Seven Tree Breeding Strategies Under Conditions of Inbreeding Depression.

Performance of Seven Tree Breeding Strategies Under Conditions of Inbreeding Depression.

Source :

English descriptors

Abstract

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