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GrainGenes Reference Report: TPG-10:3

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Reference	TPG-10:3
Title	Genome-Wide Association and Prediction of Grain and Semolina Quality Traits in Durum Wheat Breeding Populations
Journal	The Plant Genome
Year	2017
Volume	10:3
Author	Fiedler JD [ Show all 11 ]
Abstract	Grain yield and semolina quality traits are essential selection criteria in durum wheat breeding. However, high phenotypic screening costs limit selection to relatively few breeding lines in late generations. This selection paradigm confers relatively low selection efficiency due to the advancement of undesirable lines into expensive yield trials for grain yield and quality trait testing. Marker-aided selection can enhance selection efficiency, especially for traits that are difficult or costly to phenotype. The aim of this study was to identify major quality trait quantitative trait loci (QTL) for marker-assisted selection (MAS) and to explore potential application of genomic selection (GS) in a durum wheat breeding program. In this study, genome-wide association mapping was conducted for five quality traits using 1184 lines from the North Dakota State University (NDSU) durum wheat breeding program. Several QTL associated with test weight, semolina color, and gluten strength were identified. Genomic selection models were developed and forward prediction accuracies of 0.27 to 0.66 were obtained for the five quality traits. Our results show the potential for grain and semolina quality traits to be selected more efficiently through MAS and GS with further refinement. Considerable opportunity exists to extend these techniques to other traits such as grain yield and agronomic characteristics, further improving breeding efficiency in durum cultivar development.
External Databases	https://doi.org/10.3835/plantgenome2017.05.0038
QTL	[ Hide all but 1 of 18 ] QTL0080_GS-Fiedler_et_al__2017 QTL0082_GS-Fiedler_et_al__2017 QTL0083_GS-Fiedler_et_al__2017 QTL0089_GS-Fiedler_et_al__2017 QTL0091_GS-Fiedler_et_al__2017 QTL0092_GS-Fiedler_et_al__2017 QTL0093_GS-Fiedler_et_al__2017 QTL0084_SY-Fiedler_et_al__2017 QTL0090_SY-Fiedler_et_al__2017 QTL0095_SY-Fiedler_et_al__2017 QTL0096_SY-Fiedler_et_al__2017 QTL0097_SY-Fiedler_et_al__2017 QTL0081_TW-Fiedler_et_al__2017 QTL0085_TW-Fiedler_et_al__2017 QTL0086_TW-Fiedler_et_al__2017 QTL0088_TW-Fiedler_et_al__2017 QTL0087_TW-Fiedler_et_al__2017 QTL0094_TW-Fiedler_et_al__2017

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