Multi-environment QTL mapping of crown root traits in a maize RIL population

作     者：Pengcheng Li Yingying Fana Shuangyi Yina Yunyun Wanga Houmiao Wang Yang Xu Zefeng Yang Chenwu Xu Pengcheng Li;Yingying Fan;Shuangyi Yin;Yunyun Wang;Houmiao Wang;Yang Xu;Zefeng Yang;Chenwu Xu

作者机构：Jiangsu Key Laboratory of Crop Genetics and Physiology/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhou 225009JiangsuChina Jiangsu Co-Innovation Center for Modern Production Technology of Grain CropsYangzhou UniversityYangzhou 225009JiangsuChina Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of ChinaYangzhou UniversityYangzhou 225009JiangsuChina 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2020年第8卷第4期

页      面：645-654页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the National Key Research and Development Program of China(2016YFD0100303) the National Natural Science Foundation of China(31972487,31601810,and 31902101) the Natural Science Foundation of Jiangsu Province(BK20180920) the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) 

主　　题：crown traits maize 

摘      要：Crown root traits,including crown root angle(CRA),diameter(CRD),and number(CRN),are major determining factors of root system architecture,which influences crop *** maize,the genetic mechanisms determining crown root traits in the field are largely ***,CRD,and CRN were evaluated in a recombinant inbred line population in three field *** phenotypic variation was observed for crown root traits,and all measured traits showed significant genotype–environment ***(SEA)and multi-environment(MEA)quantitative trait locus(QTL)analyses were conducted for CRA,CRD,and *** 46 QTL detected by SEA,most explained less than 10%of the phenotypic variation,indicating that a large number of minor-effect QTL contributed to the genetic component of these *** detected 25 QTL associated with CRA,CRD,and CRN,and 2 and 1 QTL were identified with significant QTL-by-environment interaction effects for CRA and CRD,respectively.A total of 26.1%(12/46)of the QTL identified by SEA were also detected by MEA,with many being detected in more than one *** findings contribute to our understanding of the phenotypic and genotypic patterns of crown root traits in different *** identified environment-specific QTL and stable QTL may be used to improve root traits in maize breeding.