Development and validation of diagnostic markers for Fhb1 region, a major QTL for Fusarium head blight resistance in wheat
文献类型： 外文期刊
作者： Su, Zhenqi 1 ; Jin, Sujuan 2 ; Zhang, Dadong 2 ; Bai, Guihua 2 ;
作者机构： 1.Hebei Acad Agr & Forestry Sci, Shijiazhuang 050035, Hebei, Peoples R China
2.Kansas State Univ, Dept Agron, Manhattan, KS 66506 USA
3.Shijiazhuang Acad Agr & Forestry Sci, Shijiazhuang 050041, Hebei, Peoples R China
4.USDA ARS, Hard Winter Wheat Genet Res Unit, Manhattan, KS 66506 USA
期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）
ISSN： 0040-5752
年卷期： 2018 年 131 卷 11 期
页码：
收录情况： SCI
摘要： Key messageFunctional markers were developed based on the critical sequence deletion of TaHRC in the Fhb1 region and validated to be diagnostic in a worldwide wheat collection.AbstractWheat Fusarium head blight (FHB) is a devastating disease in wheat and barley worldwide. Growing FHB-resistant cultivars is an effective strategy to minimize FHB damage in wheat production. Fhb1 is a quantitative trait locus for FHB resistance with the largest effect on disease severity identified to date. With this study, we developed diagnostic DNA markers for Fhb1 by comparing the genomic sequences in Fhb1 region between near-isogenic lines contrasting in Fhb1 alleles and phenotypic effects of the markers. Two markers were developed based on a deletion mutation in an gene encoding a putative histidine-rich calcium-binding protein (TaHRC) and validated in different types of populations. Haplotype or sequence analyses of the two markers in the three sets of diversity panels demonstrated that they are diagnostic for Fhb1, and superior to all previously used markers in selection accuracy. They also have the advantages of low cost, easy assay, and are suitable for breeding programs with either high- or low-throughput marker laboratories.
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