生物
数量性状位点
干物质
甘薯
遗传连锁
联动装置(软件)
作物
人口
微卫星
遗传学
农学
园艺
基因
等位基因
人口学
社会学
作者
Chenxing Zheng,Zhi-cheng JIANG,Yusha Meng,Yuanyuan Wang,Xinsun Yang,Huan Zhang,Ning Zhao,Shaozhen He,Shaopei Gao,Hong Zhai,Qingchang Liu
出处
期刊:Crop Journal
[Elsevier]
日期:2023-06-01
卷期号:11 (3): 963-967
被引量:2
标识
DOI:10.1016/j.cj.2022.11.003
摘要
Sweetpotato (Ipomoea batatas (L.) Lam.) is a widely grown food crop especially in developing countries. Increasing 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 purpose. In this study, using a mapping population of 500 F1 individuals from a cross between Xushu 18 (female) and Xu 781 (male), we constructed a high-density genetic linkage map of sweetpotato using 601 simple-sequence repeat (SSR) primer pairs. The 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 sweetpotato. We 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 variation. These results provide a foundation for fine-mapping and cloning of QTL and for marker-assisted breeding in sweetpotato.
科研通智能强力驱动
Strongly Powered by AbleSci AI