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GrainGenes Reference Report: MBR-30-79

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Reference	MBR-30-79
Title	Relationships between grain protein content and grain yield components through quantitative trait locus analyses in a recombinant inbred line population derived from two elite durum wheat cultivars
Journal	Molecular Breeding
Year	2012
Volume	39
Pages	79-92
Author	Blanco A [ Show all 11 ]
Abstract	Grain protein content (GPC) in durum wheat (Triticum turgidum var. durum) is negatively correlated with grain yield. To evaluate possible genetic interrelationships between GPC and grain yield per spike, thousand-kernel weight and kernel number per spike, quantitative trait loci (QTL) for GPC were mapped using GPC-adjusted data in a covariance analysis on yield components. Phenotypic data were evaluated in a segregating population of 120 recombinant inbred lines derived from crossing the elite cultivars Svevo and Ciccio. The material was tested at five environments in southern Italy. QTL were determined by composite interval mapping based on the Svevo x Ciccio linkage map described in Gadaleta et al. (2009) and integrated with DArT markers. The close relationship between GPC and yield components was reflected in the negative correlation between the traits and in the reduction of variance when GPC values were adjusted to yield components. Ten independent genomic regions involved in the expression of GPC were detected, six of which were associated with QTL for one or more grain yield components. QTL alleles with increased GPC effects were associated with QTL alleles with decreased effects on one or more yield component traits, or vice versa (i.e. the allelic effects were in opposite direction). Four QTL for GPC showed always significant effects, and these QTL should represent genes that influence GPC independently from variation in the yield components. Such genes are of special interest in wheat breeding since they would allow an increase in GPC without a concomitant decrease in grain yield.
External Databases	https://doi.org/10.1007/s11032-011-9600-z
Locus	D_379339 [ Show all 7 ]
QTL	[ Hide all but 1 of 44 ] QGpc.SvxCi-1A.1 QGpc.SvxCi-1A.2 QGpc.SvxCi-2A.1 QGpc.SvxCi-2A.2 QGpc.SvxCi-3B QGpc.SvxCi-4B QGpc.SvxCi-6B QGys.SvxCi-1A QGys.SvxCi-1B QGys.SvxCi-2A QGys.SvxCi-2B QGys.SvxCi-3B QGys.SvxCi-6A QGys.SvxCi-7A QGys.SvxCi-7B QGwe.SvxCi-1B QGwe.SvxCi-2A QGwe.SvxCi-3A QGwe.SvxCi-3B QGwe.SvxCi-4B QGwe.SvxCi-6B QGwe.SvxCi-7B QTL0959_1A-Blanco_et_al._2012_ QTL0960_1A-Blanco_et_al._2012_ QTL0963_2A-Blanco_et_al._2012_ QTL0966_2A-Blanco_et_al._2012_ QTL0969_3B-Blanco_et_al._2012_ QTL0972_4B-Blanco_et_al._2012_ QTL0975_6B-Blanco_et_al._2012_ QTL0958_1A-Blanco_et_al._2012_ QTL0962_1B-Blanco_et_al._2012_ QTL0964_2A-Blanco_et_al._2012_ QTL0967_2B-Blanco_et_al._2012_ QTL0971_3B-Blanco_et_al._2012_ QTL0974_6A-Blanco_et_al._2012_ QTL0977_7A-Blanco_et_al._2012_ QTL0978_7B-Blanco_et_al._2012_ QTL0961_1B-Blanco_et_al._2012_ QTL0965_2A-Blanco_et_al._2012_ QTL0968_3A-Blanco_et_al._2012_ QTL0970_3B-Blanco_et_al._2012_ QTL0973_4B-Blanco_et_al._2012_ QTL0976_6B-Blanco_et_al._2012_ QTL0979_7B-Blanco_et_al._2012_
Trait Study	Grain protein and yield, Svevo x Ciccio, Blanco2012

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