文献类型： 外文期刊

作者： Zhao, Sheng ¹ ; Li, Xueying ¹ ; Song, Junfeng ¹ ; Li, Huimin ¹ ; Zhao, Xiaodi ¹ ; Zhang, Peng ² ; Li, Zhimin ¹ ; Tian, Zhiqiang ¹ ; Lv, Meng ¹ ; Deng, Ce ¹ ; Ai, Tangshun ¹ ; Chen, Gengshen ⁵ ; Zhang, Hui ¹ ; Hu, Jianlin ⁶ ; Xu, Zhijun ⁷ ; Chen, Jiafa ¹ ; Ding, Junqiang ¹ ; Song, Weibin ³ ; Chang, Yuxiao ² ;

作者机构： 1.Henan Agr Univ, Natl Key Lab Wheat & Maize Crop Sci, Zhengzhou 450002, Peoples R China

2.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Minist Agr & Rural Affairs,Genome Anal Lab, Shenzhen Branch,Guangdong Lab Lingnan Modern Agr, Shenzhen 518120, Peoples R China

3.China Agr Univ, Coll Agron & Biotechnol, Natl Maize Improvement Ctr, State Key Lab Plant Physiol & Biochem, Beijing 100193, Peoples R China

4.Guangxi Univ, Coll Life Sci & Technol, Nanning 530004, Peoples R China

5.Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Peoples R China

6.Hubei Acad Agr Sci, Food Crops Inst, Wuhan 430064, Peoples R China

7.Chinese Acad Trop Agr Sci, Zhanjiang Expt Stn, Zhanjiang 524013, Peoples R China

期刊名称：PLANT GENOME （ 影响因子：4.219； 五年影响因子：5.826 ）

ISSN：

年卷期： 2022 年 15 卷 1 期

页码：

收录情况： SCI

摘要： The leaf angle (LA), plant height (PH), and ear height (EH) are key plant architectural traits influencing maize (Zea mays L.) yield. However, their genetic determinants have not yet been well-characterized. Here, we developed a maize advanced backcross-nested association mapping population in Henan Agricultural University (HNAU-NAM1) comprised of 1,625 BC1F4/BC2F4 lines. These were obtained by crossing a diverse set of 12 representative inbred lines with the common GEMS41 line, which were then genotyped using the MaizeSNP9.4K array. Genetic diversity and phenotypic distribution analyses showed considerable levels of genetic variation. We obtained 18-88 quantitative trait loci (QTLs) associated with LA, PH, and EH by using three complementary mapping methods, named as separate linkage mapping, joint linkage mapping, and genome-wide association studies. Our analyses enabled the identification of ten QTL hot-spot regions associated with the three traits, which were distributed on nine different chromosomes. We further selected 13 major QTLs that were simultaneously detected by three methods and deduced the candidate genes, of which eight were not reported before. The newly constructed HNAU-NAM1 population in this study will further broaden our insights into understanding of genetic regulation of plant architecture, thus will help to improve maize yield and provide an invaluable resource for maize functional genomics and breeding research.