Genome-Wide Association Study for Fusarium Head Blight Resistance in Common Wheat from China

As a devastating wheat disease, Fusarium head blight (FHB) causes large losses in yield and quality. The purpose of this study was to detect the genetic loci for FHB resistance based on genome-wide association (GWAS) using two panels genotyped by Wheat 660 K SNP array 90 array. Phenotypic investigation results showed that 43.6–51.6% test varieties an infection type more than 3, indicating substantial improvement level urgently required. GWAS detected 1264 SNPs associated with response distributed all chromosomes. Fourteen QTL were stably environments. gFHB-1B (582.9~607.9 Mb chromosome 1B) gFHB-5A (577.9~596.5 5A) novel panels. Haplotype analysis both indicated gFHB-1B_R gFHB-5A_R had consistently less carrying one or no QTL. application frequency FHB-resistant alleles gradually decreasing trend breeding. This identified new control provides useful information marker-assisted selection resistance.