Mapping and validation of a new QTL for adult-plant resistance to powdery mildew in Chinese elite bread wheat line Zhou8425B
文献类型： 外文期刊
作者： Jia, Aolin 1 ; Ren, Yan 2 ; Gao, Fengmei 3 ; Yin, Guihong 4 ; Liu, Jindong 1 ; Guo, Lu 5 ; Zheng, Jizhou 5 ; He, Zhonghu; 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, Natl Wheat Improvement Ctr, 12 Zhongguancun South St, Beijing 100081, Peoples R China
2.Henan Agr Univ, Coll Agron, 63 Agr Rd, Zhengzhou 450002, Henan, Peoples R China
3.Heilongjiang Acad Agr Sci, Crop Res Inst, Harbin 150086, Heilongjiang, Peoples R China
4.Zhoukou Acad Agr Sci, Zhoukou 466001, Henan, Peoples R China
5.Focom Seed Co Ltd, 11 Chang Chun Rd, Zhengzhou 450001, Henan, Peoples R China
6.CAAS, Int Maize & Wheat Improvement Ctr, CIMMYT China Off, 12 Zhongguancun South St, Beijing 100081, Peoples R China
关键词： APR; Blumeria tritici f. sp tritici; STARP marker; Triticum aestivum; Wheat 90K SNP array
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 5 期
页码：
收录情况： SCI
摘要： Four QTLs for adult-plant resistance to powdery mildew were mapped in the Zhou8425B/Chinese Spring population, and a new QTL on chromosome 3B was validated in 103 wheat cultivars derived from Zhou8425B. Zhou8425B is an elite wheat (Triticum aestivum L.) line widely used as a parent in Chinese wheat breeding programs. Identification of genes for adult-plant resistance (APR) to powdery mildew in Zhou8425B is of high importance for continued controlling the disease. In the current study, the high-density Illumina iSelect 90K single-nucleotide polymorphism (SNP) array was used to map quantitative trait loci (QTL) for APR to powdery mildew in 244 recombinant inbred lines derived from the cross Zhou8425B/Chinese Spring. Inclusive composite interval mapping identified QTL on chromosomes 1B, 3B, 4B, and 7D, designated as QPm.caas-1BL.1, QPm.caas-3BS, QPm.caas-4BL.2, and QPm.caas-7DS, respectively. Resistance alleles at the QPm.caas-1BL.1, QPm.caas-3BS, and QPm.caas-4BL.2 loci were contributed by Zhou8425B, whereas that at QPm.caas-7DS was from Chinese Spring. QPm.caas-3BS, likely to be a new APR gene for powdery mildew resistance, was detected in all four environments. One SNP marker closely linked to QPm.caas-3BS was transferred into a semi-thermal asymmetric reverse PCR (STARP) marker and tested on 103 commercial wheat cultivars derived from Zhou8425B. Cultivars with the resistance allele at the QPm.caas-3BS locus had averaged maximum disease severity reduced by 5.3%. This STARP marker can be used for marker-assisted selection in improvement of the level of powdery mildew resistance in wheat breeding.
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