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The analysis of quantitative trait loci in multi-environment trials using a multiplicative mixed model

Journal Article


Abstract


  • A new approach for multi-environment quantitative trait locus (QTL) analysis based on an appropriate genetic model is presented. To accommodate a multi-environment analysis, the size of a QTL effect is assumed to be a random effect. The approach results in a multiplicative mixed model for QTL x environment interaction of the factor analytic type. The full genetic model may also include a factor analytic model for the residual genotype x environment interaction, whereas the environmental model for the non-genetic variation involves local, global, and extraneous variation. The approach is used to determine QTLs for yield in the Arapiles x Franklin doubled haploid population of the National Barley Molecular Marker Program. Analysis leads to the determination of 8 QTLs. Many of these QTLs are associated with other traits.

Publication Date


  • 2003

Citation


  • Verbyla, A. P., Eckermann, P. J., Thompson, R., & Cullis, B. R. (2003). The analysis of quantitative trait loci in multi-environment trials using a multiplicative mixed model. Australian Journal of Agricultural Research, 54(11-12), 1395-1408. doi:10.1071/ar02239

Scopus Eid


  • 2-s2.0-1642524996

Start Page


  • 1395

End Page


  • 1408

Volume


  • 54

Issue


  • 11-12

Abstract


  • A new approach for multi-environment quantitative trait locus (QTL) analysis based on an appropriate genetic model is presented. To accommodate a multi-environment analysis, the size of a QTL effect is assumed to be a random effect. The approach results in a multiplicative mixed model for QTL x environment interaction of the factor analytic type. The full genetic model may also include a factor analytic model for the residual genotype x environment interaction, whereas the environmental model for the non-genetic variation involves local, global, and extraneous variation. The approach is used to determine QTLs for yield in the Arapiles x Franklin doubled haploid population of the National Barley Molecular Marker Program. Analysis leads to the determination of 8 QTLs. Many of these QTLs are associated with other traits.

Publication Date


  • 2003

Citation


  • Verbyla, A. P., Eckermann, P. J., Thompson, R., & Cullis, B. R. (2003). The analysis of quantitative trait loci in multi-environment trials using a multiplicative mixed model. Australian Journal of Agricultural Research, 54(11-12), 1395-1408. doi:10.1071/ar02239

Scopus Eid


  • 2-s2.0-1642524996

Start Page


  • 1395

End Page


  • 1408

Volume


  • 54

Issue


  • 11-12