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Investigation and Genome-Wide Association Analysis of Fusarium Seedling Blight Resistance in Chinese Elite Wheat Lines

文献类型： 外文期刊

作者： Liu, Yike 1 ; Zhu, Guang 1 ; Zhu, Zhangwang 1 ; Chen, Lin 1 ; Niu, Hongli 3 ; He, Weijie 1 ; Tong, Hanwen 1 ; Song, Jingh 1 ;

作者机构： 1.Hubei Acad Agr Sci, Food Crops Inst, Hubei Key Lab Food Crop Germplasm & Genet Improve, Hubei Engn & Technol Res, Wuhan, Peoples R China

2.Ctr Wheat, Wheat Dis Biol Res Stn Cent China, Wuhan, Peoples R China

3.Yangtze Univ, Engn Res Ctr Ecol & Agr Use Wetland, Minist Educ, Jingzhou, Peoples R China

4.Yangtze Univ, Coll Agr, Hubei Collaborat Innovat Ctr Grain Ind, Jingzhou, Peoples R China

关键词： common wheat; Fusarium seedling blight; Fusarium head blight; GWAS; QTL

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.754； 五年影响因子：6.612 ）

ISSN： 1664-462X

年卷期： 2021 年 12 卷

页码：

收录情况： SCI

摘要： Fusarium seedling blight (FSB) is an important disease of wheat occurring as part of the Fusarium disease complex consisting also of Fusarium head blight (FHB). 240 Chinese elite cultivars and lines were evaluated in greenhouse experiments for FSB resistance and genotyped using the wheat 90 K single nucleotide polymorphism arrays. Among them, 23 accessions had an average lesion length of less than 0.6 cm, exhibiting potential for breeding for FSB resistance in wheat. Jingfumai 1 and Yangmai 11 had a relatively high resistance to both FSB and FHB simultaneously. Six relatively stable quantitative trait loci (QTLs) were detected on chromosome arms 1DL, 3AS, 3BL, 6BL, 7AL, and Un using the mixed linear model approach, interpreting 4.83-7.53% of phenotypic variation. There was a negative correlation between the average FSB lesion length and the BLUE FHB index with a low coefficient, and resistance to both diseases appeared to be conferred by different QTLs across the same population. Four KASP markers were detected on 1DL, 3AS, 3BL, and 6BL in QTLs to facilitate marker-assisted selection. Combined with transcriptome data analysis, eight defense-related genes were considered as candidates for mapping QTLs. The resistant elite germplasm, mapped QTLs, and KASP markers developed in this study are useful resources for enhancing Fusarium seedling blight in wheat breeding.

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