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Quantitative trait loci for resistance to fusarium head blight and deoxynivalenol accumulation in Wangshuibai wheat under field conditions

文献类型： 外文期刊

作者： Ma, H. X. 1 ; Zhang, K. M. 2 ; Gao, L. 2 ; Bai, G. H. 2 ; Chen, H. G. 2 ; Cai, Z. X. 2 ; Lu, W. Z. 2 ;

作者机构： 1.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China

2.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China; Kansas State Univ, USDA ARS, Plant Sci & Entomol Res Unit, Manhattan, KS 66506 USA

关键词： deoxynivalenol;fusarium head blight;molecular markers;QTLs;Triticum aestivum

期刊名称：PLANT PATHOLOGY （ 影响因子：2.59； 五年影响因子：2.924 ）

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收录情况： SCI

摘要： Wangshuibai is a Chinese landrace wheat with a high level of resistance to fusarium head blight(FHB)and deoxynivalenol(DON)accumulation.Using an F7 population of recombinant inbred lines(RILs)derived from the cross between Wangshuibai and Annong 8455 for molecular mapping of quantitative trait loci(QTL)for FHB resistance,the proportion of scabbed spikelets(PSS)and DON content were assessed under field conditions.Composite interval mapping revealed that two and three QTL were significantly associated with low PSS and low DON content,respectively,over 2 years.QTL on chromosomes 3B and 2A explained 17 and 11.5%,respectively,of the phenotypic variance for low PSS,whereas QTL on chromosomes 5A,2A and 3B explained 12.4,8.5 and 6.2%,respectively,of the phenotypic variance for low DON content.The 3B QTL appeared to be associated mainly with low PSS,and the 5A QTL primarily with low DON content in Wangshuibai.The 2A QTL had minor effects on both low PSS and DON content.Microsatellite and AFLP markers linked to these QTL should be useful for marker-assisted selection of QTL for low PSS and low DNA content from Wangshuibai.

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