Genome wide association mapping of resistance to Fusarium head blight spread and deoxynivalenol accumulation in Chinese elite wheat germplasm
Date:2021-07-29 clicks:
DOI number:10.1094/phyto-12-0484-R
Journal:Phytopathology
Key Words:wheat; association mapping; Fusarium head blight; deoxynivalenol
Abstract:Improving resistance to Fusarium head blight in wheat is crucial in integrated FHB management and prevention of DON contaminations in grains. To identify novel sources of resistance, a genome-wide association study (GWAS) was performed using a panel of 213 accessions from elite Chinese wheat germplasm. The panel was evaluated for FHB severity in four environments and DON content in grains in two environments. High correlations across environments and high heritability were observed for FHB severity and DON content in grains. The panel was genotyped with 90K Illumina iSelect single nucleotide polymorphism (SNP) array and 11461 SNP markers were obtained for further analysis. In total, 6 loci for FHB resistance to fungal spread and 3 loci for resistance to DON accumulation were significant (p<0.001) at least two environments. QFHB-2BL.1 tagged by IWB52433 and QFHB-3A tagged by IWB50548 were responsible for both resistance to fungal spread and DON accumulation. In summary, this study provided an integrated view of FHB resistance resources in wheat and identified novel resistance loci that could be used for wheat improvement.
Indexed by:SCI
Discipline:Agricultural science
First-Level Discipline:Crop Science
Document Type:SCI
Volume:109
Page Number:1208-1216
Translation or Not:no
Date of Publication:2019-12-01
Included Journals:SCI
