文献类型： 外文期刊
作者： Lv, Xiangling 1 ; Song, Maoxing 1 ; Cheng, Zixiang 2 ; Yang, Xiaoyan 3 ; Zhang, Xiaocong 2 ; Zhou, Zhiqiang 2 ; Zhang, 1 ;
作者机构： 1.Shenyang Agr Univ, Coll Agron, Shenyang 110161, Liaoning, Peoples R China
2.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
3.Chongqing Acad Agr Sci, Chongqing 401329, Peoples R China
关键词： Maize; Gray leaf spot; Recombinant inbred lines; Chromosome segment substitution lines; Fine mapping
期刊名称：MOLECULAR BREEDING （ 影响因子：2.6； 五年影响因子：2.7 ）
ISSN： 1380-3743
年卷期： 2020 年 40 卷 6 期
页码：
收录情况： SCI
摘要： Gray leaf spot (GLS), caused by the fungal pathogenCercospora zeae-maydis, is one of the most serious foliar diseases of maize worldwide. In the present study, a population of recombinant inbred lines (RILs) derived from a gray leaf spot-resistant inbred line Qi319 and a susceptible line Ye478 was used to map quantitative trait loci (QTL) for GLS resistance. For initial QTL analysis, genetic maps containing 199 simple sequence repeat (SSR) markers were constructed. One major QTL,qGLS1.02, was consistently detected between SSR markers umc2614 and bnlg1803, and explained 6.86-36.24% of the phenotypic variation in GLS resistance. The chromosome segment substitution lines harboring theqGLS1.02from Qi319 were more resistant to GLS (P < 0.01). Using a recombinant-derived progeny test strategy, the interval containingqGLS1.02was narrowed to similar to 314 kb according to the B73 (RefGen_v4 genome) including 12 candidate genes; only six of them have been annotated functionally.
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