Mapping QTLs Controlling Beneficial Fatty Acids Based on the Embryo and Maternal Plant Genomes in Brassica napus L. (11th March 2015)

• Record Type: Journal Article
• Authors: Wen, Juan; Xu, Jianfeng; Long, Yan; Xu, Haiming; Wu, Jianguo; Meng, Jinling; Shi, Chunhai
• Is Part Of: Journal of the American Oil Chemists' Society. Volume 92:Number 4(2015)
• Page Start: 541
• Page End: 552
• Publication Date: 2015-03-11
• Subjects: Brassica napus L. -- Fatty acid component -- Quantitative trait locus (QTL) -- Embryo nuclear genome -- Maternal plant nuclear genome; Oils and fats -- Periodicals; Soap -- Periodicals; Fats -- Periodicals; Food-Processing Industry -- Periodicals; Acides gras -- Périodiques; Aliments -- Industrie et commerce -- Périodiques; Huiles et graisses -- Périodiques; Savon -- Périodiques; Oliën; Chemie; Oils and fats; Soap; Periodicals; 547.77
• DOI: 10.1007/s11746-015-2618-3
• Languages: English
• ISSNs: 0003-021X

Abstract

Abstract: This study was mainly carried out to detect the quantitative trait loci (QTLs) located simultaneously in embryo and maternal plant nuclear genomes for beneficial fatty acid contents of rapeseed under different environments by using a mapping model and mapping populations from a cross of 'Tapidor' × 'Ningyou7.' Eight, three, six, seven and three QTLs respectively for palmitic, oleic, linoleic, linolenic and eicosenoic acid contents were identified and subsequently mapped on chromosomes A1, A3, A4, A6, A8, A9, C1, C3, C5, C7, C8 and C9. Among them, 12 QTLs were major ones that could respectively explain more than 10 % of phenotypic variation. Two specific genomic regions on A8 and C3 were associated with several QTLs relating to multiple fatty acid contents. Some of the markers such as HBr015 and JICB0633 showed tight linkage with the QTLs, which could be used for improving the fatty acid component(s) of rapeseed.