Genetic analysis of end?use quality traits in wheat

Wheat (Triticum aestivum L.) is a major cereal food crop in the world. End-use quality improvement objective wheat breeding programs. ‘Tiger’ hard white winter cultivar with excellent bread baking qualities. The of this study was to identify genetic loci underlying traits Tiger. A doubled-haploid (DH) population derived from cross between Tiger and ‘Danby’ grown two environments. total 17 together grain yield (GY) stripe rust (Puccinia striiformis f. sp. Tritici) were evaluated. genotyped using single nucleotide polymorphism (SNP) markers generated through genotyping-by-sequencing (GBS). linkage map constructed 1,507 GBS-SNP that distributed over all 21 chromosomes. Most showed normal or approximately distributions. Composite interval mapping analysis revealed 72 quantitative trait (QTL), 67 for dispersed on chromosomes except 3D, 5D, 6A, 7A. Among QTL, some novel QTL have not been reported previously. Although many only significant one environment, six genomic regions 1B, 1D, 2D, 5BL, 6B, 6DL harbored several important including kernel hardness (KH), flour protein content (GPC, FPC), (FY), mix time (MT), mixing tolerance (MTOL), loaf volume (LV), regression (LVReg). At these loci, Danby contributed favorable alleles KH, GPC FPC, while other traits. findings will be useful bread-making wheat.