Genomic Regions Influencing Preharvest Sprouting Tolerance in Two Doubled-Haploid Wheat Populations (Triticum aestivum L.)

The current and projected climate change that is represented by increasing temperatures humidity levels irregular rainfall patterns promotes the occurrence of preharvest sprouting (PHS) in wheat. PHS results significant economic losses, globally, which necessitates need for high-yielding cultivars with increased tolerance; hence, this study was conducted. evaluated two doubled-haploid (DH) wheat populations Tugela-Dn × Elands Flamink across six environments Free State Province South Africa to select genotypes tolerance further map underlying loci. Significant effects DH lines (194) (6) were observed tolerance. validate previous findings only expressed when environmental conditions are conducive. Quantitative trait loci (QTL) mapping using single-nucleotide polymorphism (SNP) silicoDArT markers revealed three additive QTLs major on chromosomes 5B 7B, these detected more than once, favourable. These explained a phenotypic variation (PVE) varying between 10.08% 20.30% (LOD = 2.73–3.11). About 16.50% performed level (the PHS-tolerant parent) recommended selection pre-breeding or breeding programme. expected expedite on-going efforts winter wheat, will facilitate development adapted African environment.