Construction of a high-density SSR genetic linkage map and identification of QTL for storage-root yield and dry-matter content in sweetpotato

作     者：Chenxing Zheng Zhicheng Jiang Yusha Meng Jun Yu Xinsun Yang Huan Zhang Ning Zhao Shaozhen He Shaopei Gao Hong Zhai Qingchang Liu Chenxing Zheng;Zhicheng Jiang;Yusha Meng;Jun Yu;Xinsun Yang;Huan Zhang;Ning Zhao;Shaozhen He;Shaopei Gao;Hong Zhai;Qingchang Liu

作者机构：Key Laboratory of Sweetpotato Biology and BiotechnologyMinistry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis&UtilizationMinistry of EducationCollege of Agronomy&BiotechnologyChina Agricultural UniversityBeijing 100193China Institute of Rural DevelopmentZhejiang Academy of Agricultural SciencesHangzhou 310021ZhejiangChina Institute of Food CropsHubei Academy of Agricultural SciencesWuhan 430064HubeiChina 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2023年第11卷第3期

页      面：963-967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(2019YFD1001300,2019YFD1001301) the Earmarked Fund for CARS-10-Sweetpotato(CARS-10) the Beijing Food Crops Innovation Consortium Program(BAIC02-2022) Hebei Key R&D Program(20326320D,22322911D) 

主　　题：Sweetpotato SSR linkage map QTL Storage-root yield Dry-matter content 

摘      要：Sweetpotato(Ipomoea batatas(L.)Lam.)is a widely grown food crop especially in developing *** storage-root yield and dry-matter content has been the main breeding objective of the crop,and DNA marker-assisted breeding is needed for this *** this study,using a mapping population of 500 F1 individuals from a cross between Xushu 18(female)and Xu 781(male),we constructed a highdensity genetic linkage map of sweetpotato using 601 simple-sequence repeat(SSR)primer *** Xushu 18 map contained 90 linkage groups with 5547 SSR markers and spanned 18,263.5 cM,and the Xu 781 map contained 90 linkage groups with 4599 SSR markers and spanned 18,043.7 cM,representing the highest genome coverage yet reported for *** identified 33 QTL for storage-root yield and 16 QTL for dry-matter content,explaining respectively 6.5%–47.5%and 3.2%–18.9%of *** results provide a foundation for fine-mapping and cloning of QTL and for marker-assisted breeding in sweetpotato.