Genome-Wide Association Study for <i>Fusarium</i> Head Blight Resistance in Common Wheat from China
Chaonan Shi,
Huaiyu Chao,
Xiaonan Sun,
Yongqiang Suo,
Zeyu Chen,
Zhikang Li,
Lin Ma,
Jiaqi Li,
Yan Ren,
Wei Hua,
Caixia Lan,
Feng Chen
Affiliations
Chaonan Shi
National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
Huaiyu Chao
National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
Xiaonan Sun
National Key Laboratory of Wheat and Maize Crop Science, Agronomy College, Henan Agricultural University, Zhengzhou 450002, China
Yongqiang Suo
National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
Zeyu Chen
National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
Zhikang Li
National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
Lin Ma
National Key Laboratory of Wheat and Maize Crop Science, Agronomy College, Henan Agricultural University, Zhengzhou 450002, China
Jiaqi Li
National Key Laboratory of Wheat and Maize Crop Science, Agronomy College, Henan Agricultural University, Zhengzhou 450002, China
Yan Ren
National Key Laboratory of Wheat and Maize Crop Science, Agronomy College, Henan Agricultural University, Zhengzhou 450002, China
Wei Hua
Zhejiang Academy of Agricultural Science, Hangzhou 310021, China
Caixia Lan
National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
Feng Chen
National Key Laboratory of Wheat and Maize Crop Science, Agronomy College, Henan Agricultural University, Zhengzhou 450002, 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 a genome-wide association study (GWAS) using two panels genotyped by the Wheat 660 K SNP array and Wheat 90 K SNP array. Phenotypic investigation results showed that 43.6–51.6% of the test varieties showed an infection type of more than 3, indicating that substantial improvement in the level of resistance was urgently required. GWAS detected 1264 SNPs associated with FHB response distributed on all wheat chromosomes. Fourteen QTL were stably detected in two environments. gFHB-1B (582.9~607.9 Mb on chromosome 1B) and gFHB-5A (577.9~596.5 Mb on 5A) were two novel resistance loci that were detected in two wheat panels. Haplotype analysis of both gFHB-1B and gFHB-5A indicated that varieties with gFHB-1B_R and gFHB-5A_R had consistently less FHB than varieties carrying a one or no resistance QTL. The application frequency of the FHB-resistant alleles gFHB-1B and gFHB-5A showed a gradually decreasing trend in FHB resistance breeding. This study identified new genetic loci for the control of FHB and provides useful information for marker-assisted selection in wheat FHB resistance.
