DoerksenBousquetBeaulieu2014

Référence

Doerksen, T.K., Bousquet, J., Beaulieu, J. (2014) Inbreeding depression in intra-provenance crosses driven by founder relatedness in white spruce. Tree Genetics and Genomes, 10(1):203-212. (Scopus )

Résumé

Genetic means for height growth differed between intra- and inter-provenance crosses, which we hypothesized was due partly to unidentified relatedness among intra-provenance base parents resulting in mild inbreeding and inbreeding depression among their offspring. A dense array of 5,844 single nucleotide polymorphisms was used to directly construct a genomic relationship matrix (G) that had four elements ranging from 0.17 to 0.24, between five intra-provenance base parents. Adjusting the numerator relationship matrix for this relatedness among base parents produced inbreeding coefficients of F i ≈ 0.1 in their offspring, which displayed depressed height growth. Accounting for inbreeding level as a covariate in a mixed model decreased grossly overestimated (up to 2 ×) dominance variance in models without the covariate adjustment. Height growth decreased 39 cm (~ 6 %) for every 0.1 increase in F i. © 2013 Springer-Verlag Berlin Heidelberg.

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@ARTICLE { DoerksenBousquetBeaulieu2014,
    AUTHOR = { Doerksen, T.K. and Bousquet, J. and Beaulieu, J. },
    TITLE = { Inbreeding depression in intra-provenance crosses driven by founder relatedness in white spruce },
    JOURNAL = { Tree Genetics and Genomes },
    YEAR = { 2014 },
    VOLUME = { 10 },
    PAGES = { 203-212 },
    NUMBER = { 1 },
    NOTE = { cited By (since 1996)0 },
    ABSTRACT = { Genetic means for height growth differed between intra- and inter-provenance crosses, which we hypothesized was due partly to unidentified relatedness among intra-provenance base parents resulting in mild inbreeding and inbreeding depression among their offspring. A dense array of 5,844 single nucleotide polymorphisms was used to directly construct a genomic relationship matrix (G) that had four elements ranging from 0.17 to 0.24, between five intra-provenance base parents. Adjusting the numerator relationship matrix for this relatedness among base parents produced inbreeding coefficients of F i ≈ 0.1 in their offspring, which displayed depressed height growth. Accounting for inbreeding level as a covariate in a mixed model decreased grossly overestimated (up to 2 ×) dominance variance in models without the covariate adjustment. Height growth decreased 39 cm (~ 6 %) for every 0.1 increase in F i. © 2013 Springer-Verlag Berlin Heidelberg. },
    AFFILIATION = { Natural Resources Canada, Canadian Forest Service, Canadian Wood Fibre Centre, 1055 du P.E.P.S., Stn Sainte-Foy, P.O. Box 10380, Québec, QC, G1V 4C7, Canada; Canada Research Chair in Forest and Environmental Genomics, Institute for Systems and Integrative Biology, Université Laval, Québec, QC, G1V0A6, Canada },
    AUTHOR_KEYWORDS = { Dominance; Genomic relationship matrix; Inbreeding; Inbreeding depression; Relatedness },
    DOCUMENT_TYPE = { Article },
    OWNER = { Luc },
    SOURCE = { Scopus },
    TIMESTAMP = { 2014.02.05 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84892487963&partnerID=40&md5=046ce9d0b98038287b15c725036ddb4d },
}

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