中国油料作物学报2017，Vol.39Issue(6)：785-793,9.DOI:10.7505/j.issn.1007-9084.2017.06.009
芝麻蒴果大小相关性状的QTL定位分析
Quantitative trait locus mapping for sesame capsule size
摘要
Abstract
For sesame QTL on capsule size,a genetic map was constructed based on 430 recombinant inbred lines derived from Zhongzhi 13 × ZZM2748.Capsule length,width and thickness were investigated on 2 capsule positions (middle and flanking) in 3 environments.Results showed broad ranges of length (1.54 to 4.39 cm),width (0.42 to 1.31 cm) and thickness (0.37 to 1.33 cm) respectively.Significant correlations were found between width and thickness in the capsules length and thickness of the capsules at same position.The length or width between the middle and flanking capsules also showed significant correlation.In combination with the phenotypes and genotypes of the RIL population,a total of 40 QTLs were detected with phenotype contribution rates varied from 2.00％ to 23.67％.Among them,9,4,and 5 loci were detected for length,width and thickness of middle capsule,and 10,8 and 4 loci were for length,width and thickness of flanking capsule.The loci qMCL13.1,qMCW9.1 and (13.77％) had the highest contribution rates (13.69％ in average) to length,width and thickness of middle capsule,and qFCL11.1 (9.31％),qFCW9.1 (19.65％),qFCT9.1 (9.41％) contributed the largest variations for length,width and thickness of flanking capsule.There were 21 QTLs repeatedly observed in more than one environment and explained the phenotype variation from 2.00 to 23.67％ with 9 detected across all three environments,and some of them exhibited pleiotropic effect on different traits.This study provided an insight for sesame yield related traits,and a foundation to identify capsule genes in the future.关键词
芝麻/RIL群体/蒴果性状/QTL定位Key words
sesame/RIL population/capsule size/QTL mapping分类
农业科技引用本文复制引用
杨梅,王林海,杨文娟,高媛,张艳欣,朱晓冬,周瑢,黎冬华,张秀荣,吴文华..芝麻蒴果大小相关性状的QTL定位分析[J].中国油料作物学报,2017,39(6):785-793,9.基金项目
农业部物种保护专项(2016NWB033) （2016NWB033）
现代农业产业技术体系建设专项资金(CARS-14) （CARS-14）
中国农业科学院科技创新工程(CAAS-ASTIP-2013-OCRI) （CAAS-ASTIP-2013-OCRI）
