文献类型： 外文期刊

作者： Ouyang, Wenqi ¹ ; Chen, Limiao ¹ ; Ma, Junkui ² ; Liu, Xiaorong ² ; Chen, Haifeng ¹ ; Yang, Hongli ¹ ; Guo, Wei ¹ ; Shan, Zhihui ¹ ; Yang, Zhonglu ¹ ; Chen, Shuilian ¹ ; Zhan, Yong ³ ; Zhang, Hengbin ³ ; Cao, Dong ¹ ; Zhou, Xinan ¹ ;

作者机构： 1.Chinese Acad Agr Sci, Key Lab Biol & Genet Improvement Oil Crops, Minist Agr & Rural Affairs, Oil Crops Res Inst, Wuhan 430062, Peoples R China

2.Shanxi Acad Agr Sci, Ind Crop Inst, Taiyuan 030006, Peoples R China

3.Xinjiang Acad Agr & Reclamat Sci, Crop Res Inst, Key Lab Cereal Qual Res & Genet Improvement, Xinjiang Prod & Construct Crops, Shihezi 832000, Peoples R China

关键词： soybean; drought; RIL; resequencing; QTLs

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）

ISSN：

年卷期： 2022 年 23 卷 18 期

页码：

收录情况： SCI

摘要： With global warming and regional decreases in precipitation, drought has become a problem worldwide. As the number of arid regions in the world is increasing, drought has become a major factor leading to significant crop yield reductions and food crises. Soybean is a crop that is relatively sensitive to drought. It is also a crop that requires more water during growth and development. The aim of this study was to identify the quantitative trait locus (QTL) that affects drought tolerance in soybean by using a recombinant inbred line (RIL) population from a cross between the drought-tolerant cultivar 'Jindou21' and the drought-sensitive cultivar 'Zhongdou33'. Nine agronomic and physiological traits were identified under drought and well-watered conditions. Genetic maps were constructed with 923,420 polymorphic single nucleotide polymorphism (SNP) markers distributed on 20 chromosomes at an average genetic distance of 0.57 centimorgan (cM) between markers. A total of five QTLs with a logarithm of odds (LOD) value of 4.035-8.681 were identified on five chromosomes. Under well-watered conditions and drought-stress conditions, one QTL related to the main stem node number was located on chromosome 16, accounting for 17.177% of the phenotypic variation. Nine candidate genes for drought resistance were screened from this QTL, namely Glyma.16G036700, Glyma.16G036400, Glyma.16G036600, Glyma.16G036800, Glyma.13G312700, Glyma.13G312800, Glyma.16G042900, Glyma.16G043200, and Glyma.15G100700. These genes were annotated as NAC transport factor, GATA transport factor, and BTB/POZ-MATH proteins. This result can be used for molecular marker-assisted selection and provide a reference for breeding for drought tolerance in soybean.