Identification of stably expressed QTL for resistance to black shank disease in tobacco (Nicotiana tabacum L.) line Beinhart 1000-1

文献类型： 外文期刊

第一作者： Zhang, Yusheng

作者： Zhang, Yusheng;Guo, Xuan;Yan, Xingxing;Ren, Min;Jiang, Caihong;Cheng, Yazeng;Wen, Liuying;Liu, Dan;Zhang, Yu;Sun, Mingming;Feng, Quanfu;Yang, Aiguo;Cheng, Lirui;Guo, Xuan

作者机构：

关键词： Phytophthora nicotianae; Quantitative trait locus; Plant disease resistance; Simple sequence repeats

期刊名称：CROP JOURNAL （ 影响因子：4.407； 五年影响因子：5.687 ）

ISSN： 2095-5421

年卷期： 2018 年 6 卷 3 期

页码：

收录情况： SCI

摘要： Cigar line Beinhart 1000-1 has effective durable resistance to black shank (BS) and is considered one of the most resistant sources in tobacco (Nicotiana tabacum L.). To investigate the inheritance and identification of stable quantitative trait loci (QTL) for BS response, F-2, BC1F2 individuals and BC1F2: 3 lines were produced from a cross between Beinhart 1000-1 and Xiaohuangjin 1025. Two major quantitative trait loci (M-QTL) named qBS7 and qBS17 were repeatedly detected under different conditions. QTL qBS7 was mapped to the region between PT30174 and PT60621 and explained 17.40%-25.60% of the phenotypic variance under different conditions. The other QTL qBS17 in interval PT61564-PT61538 of linkage group 17 was detected in a BC1F2 population in the field and in BC1F2: 3 in both the field and at the seedling stage, explaining 6.90% to 11.60% of the phenotypic variance. The results improve our understanding of the inheritance of resistance to BS and provide information that can be used in marker-assisted breeding. (C) 2018 "Crop Science Society of China and Institute of Crop Science, CAAS". Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.

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