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ARS Home » Plains Area » Manhattan, Kansas » Center for Grain and Animal Health Research » Hard Winter Wheat Genetics Research » Research » Publications at this Location » Publication #366437
Research Project: Genetic Improvement of Biotic and Abiotic Stress Tolerance and Nutritional Quality in Hard Winter Wheat

Location: Hard Winter Wheat Genetics Research

Title: Meta-analysis of QTLs for Fusarium head blight resistance in Chinese wheat landraces

Author
item CAI, JIN - Kansas State University
item WANG, SHAN - Kansas State University
item SU, ZHENQI - Kansas State University
item LI, TAO - Kansas State University
item ZHANG, XIANGHUI - Kansas State University
item Bai, Guihua

Submitted to: The Crop Journal
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/6/2019
Publication Date: 7/19/2019
Citation: Cai, J., Wang, S., Su, Z., Li, T., Zhang, Bai, G. 2019. Meta-analysis of QTLs for Fusarium head blight resistance in Chinese wheat landraces. The Crop Journal. https://doi.org/10.1016/j.cj.2019.05.003.
DOI: https://doi.org/10.1016/j.cj.2019.05.003

Interpretive Summary: Fusarium head blight (FHB) causes significant reductions in wheat grain yield and quality. Many FHB resistance quantitative trait loci (QTLs) have been reported from Chinese sources, but the relationships among those QTLs from different landraces have not been characterized. In this study, we mapped 31 QTLs on 16 chromosomes in five different Chinese landraces. Meta-analysis identified six reproducible meta-QTLs, with two on chromosome 3B and one each on the chromosomes 2D, 3A, 3D and 4D. Closely linked markers to all the meta-QTLs were successfully converted to breeder-friendly assays for use in marker-assisted selection.

Technical Abstract: Epidemics of Fusarium head blight (FHB), incited by Fusarium graminearum Schwabe, can cause significant reduction in wheat grain yield and quality. Numerous quantitative trait loci (QTLs) for FHB resistance have been reported from Chinese sources, however, the relationships among those QTLs from different landraces have not been characterized. Previously we mapped QTLs for FHB resistance in five Chinese landraces ‘Haiyanzhong’ (HYZ), ‘Wangshuibai’ (WSB), ‘Baishanyuehuang’ (BSYH), ‘Huangfangzhu’ (HFZ) and ‘Huangcandou’ (HCD) using low-density maps. In this study, we constructed high-density maps of single nucleotide polymorphism s (SNPs) and mapped 31 QTLs on 16 chromosomes with ten newly mapped QTLs in the five populations. We constructed a consensus map for the five populations and used meta-analysis identified six meta-QTLs (MQTLs) with two on the chromosome arm 3BS (3BSd and 3BSc), and one each on the chromosomes 3A, 3D, 2D and 4D. Closely linked markers to all the meta-QTLs were identified and 22 GBS-SNPs were successfully converted to breeder friendly kompetitive allele specific PCR (KASP) assays. Those KASP markers tightly linked to QTLs mapped in multiple populations should be useful for marker-assisted selection of these QTLs in breeding programs.