Identification and Fine Mapping of qSCR4.01, a Novel Major QTL for Resistance to Puccinia polysora in Maize
文献类型： 外文期刊
作者： Deng, Ce 1 ; Lv, Meng 1 ; Li, Xueying 1 ; Zhao, Xiaodi 1 ; Li, Huimin 1 ; Li, Zhimin 1 ; Tian, Zhiqiang 1 ; Leonard, Apri 1 ;
作者机构： 1.Henan Agr Univ, Synerget Innovat Ctr Henan Grain Crops, Zhengzhou 450002, Peoples R China
2.Henan Agr Univ, Natl Key Lab Wheat & Maize Crop Sci, Zhengzhou 450002, Peoples R China
3.DowDuPont, Agr Div, Corteva Agrisci, Johnston, IA USA
4.Henan Acad Agr Sci, Inst Plant Protect, Zhengzhou 450002, Peoples R China
关键词： maize; southern corn rust; novel QTL; fine mapping
期刊名称：PLANT DISEASE （ 影响因子：4.438； 五年影响因子：4.7 ）
ISSN： 0191-2917
年卷期： 2020 年 104 卷 7 期
页码：
收录情况： SCI
摘要： Southern corn rust (SCR) is a prevalent foliar disease that can lead to severe yield losses in maize. Growing SCR-resistant varieties is the most effective way to control the disease. To identify major quantitative trait loci (QTLs) for SCR resistance, a recombinant inbred line population derived from a cross between CIMBL83 (resistant) and Lx9801 (sus-ceptible) was analyzed. The resistance to SCR had high heritability within the population, and a major QTL on chromosome 4 (gSCR4.01), which can explain 48 to 65% of the total phenotypic variation, was consistently detected across multiple environments. Using a progeny-based fine-mapping strategy, we delimited gSCR4.01 to an interval of -770 kb. In contrast to other major QTLs for SCR resistance previously reported on the short arm of chromosome 10, gSCR4.01 is a novel QTL and, therefore, a desirable source of SCR resistance in maize breeding programs.
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