中国油料作物学报2019，Vol.41Issue(1)：18-24,7.DOI:10.7505/j.issn.1007-9084.2019.01.003
蓖麻枯萎病抗性的QTL定位分析
Mapping QTLs conferring resistance to Fusarium wilt in castor (Ricinus communis L.)
摘要
Abstract
In this study, the QTLs conferring the resistance to Fusarium wilt were mapped with the F2 populations derived from YC2 × YF1 resistant and susceptible combination under 2 environments in castor. Genetic analysis presented a continuous skewness distribution in populations, tending to resistant parent. 5 QTLs were identified in 2014, explained 18. 21％ of phenotype variation, with a single locus contribution rate of 0. 05％-12. 32％.Dynamic mapping was performed at 5 stages including 20 d, 30 d, 40 d after seedling, squaring stage and milk ripening period in 2015, and 4, 12, 13, 4 and 1 QTLs were detected respectively, with a single locus contribution rate of 1. 64％-21. 91％. 1, 3 and 6 QTLs were identified simultaneously at 4, 3 and 2 stages respectively. The detected QTLs at these 5 stages were mainly concentrated on linkage group 3, 4 and 8. One QTL located on linkage group 8 was detected simultaneously in both environments at the same stage. The above results could facilitate the molecular marker assisted selection of Fusarium wilt resistance in castor.关键词
蓖麻/枯萎病/抗性/动态QTL定位Key words
Ricinus communis L./Fusarium wilt/resistance/dynamic QTL mapping分类
农业科技引用本文复制引用
陈森,陆建农,施玉珍,汪亚菲,王亚如,何展泳,殷学贵..蓖麻枯萎病抗性的QTL定位分析[J].中国油料作物学报,2019,41(1):18-24,7.基金项目
国家自然科学基金 (31271759) （31271759）
广东省科技计划项目 (2013B060400024, 2014A020208116, 2016A020208015) （2013B060400024, 2014A020208116, 2016A020208015）
广东海洋大学创新强校工程项目 (GDOU2013050206) （GDOU2013050206）
