QTL Analysis of Five Morpho-Physiological Traits in Bread Wheat Using Two Mapping Populations Derived from Common Parents

摘要: Traits such as plant height (PH), juvenile growth habit (GH), heading date (HD), and tiller number are important for both increasing yield potential improving crop adaptation to climate change. In the present study, these traits were investigated by using same bi-parental population at early (F2 F2-derived F3 families) late (F6 F7, recombinant inbred lines, RILs) generations detect quantitative trait loci (QTLs) search candidate genes. A total of 176 178 lines genotyped wheat Illumina 25K Infinium SNP array. The two genetic maps spanned 2486.97 cM 3732.84 in length, F2 RILs, respectively. QTLs explaining highest phenotypic variation found on chromosomes 2B, 2D, 5A, 7D HD GH, whereas those PH 4B 4D. Several QTL detected (i.e., number) not they due dominance effects. Some identified co-mapped well-known adaptive genes Ppd-1, Vrn-1, Rht-1). Other putative each trait, which PINE1 PIF4 may be considered new GH TTN wheat. use a large mapping combined with NGS-based genotyping techniques could improve map resolution allow closer tagging.