油菜籽粒发育过程中脂肪酸累积模式及相关分析  

Accumulation pattern of fatty acids and their associations during development of rapeseed

作　　者：刘念 范其新 蒙大庆 汤天泽 李芝凡 李迎春 谢卓霖 

机构地区：[1]绵阳市农业科学研究院,四川绵阳621023

出　　处：《江苏农业学报》2014年第1期21-26,共6页Jiangsu Journal of Agricultural Sciences

基　　金：国家油菜产业体系建设项目(CARS-13);"十二五"四川省农作物育种攻关项目(2011YZGG005);国家农业科技成果转化项目(2012GB2F000397)

摘　　要：为研究高、低芥酸油菜品种籽粒发育过程中脂肪酸累积模式及相关性,以甘蓝型油菜低芥酸品种绵油88和特高芥酸品种绵油309为材料,调查了油菜在开花后10 d、15 d、20 d、25 d、30 d、40 d、45 d和50 d的油菜籽粒中脂肪酸含量的变化。结果表明:高、低芥酸油菜品种在脂肪酸累计过程中,棕榈酸、亚油酸、亚麻酸累积模式基本一致,油酸、花生烯酸、芥酸的累积方式上差异较大。相关性分析结果表明,棕榈酸含量与油酸、花生烯酸、芥酸含量呈负相关,与亚麻酸含量呈显著正相关;在高芥酸品种中,油酸含量与亚油酸、亚麻酸含量相关性较低;在低芥酸品种中,油酸含量与亚油酸、亚麻酸含量的相关性较高。To explore the accumulation pattern of fatty acids and the correlations during rape seed development,Mianyou88, a low erucic acid rapeseed cultivar, and Mianyou 309, a high erucic acid rapeseed cultivar, were used asthe materials. The changes of fatty acids contents and the activities of enzymes were measured on the 10th day, 15thday, 20th day, 25th day, 30th day, 40th day, 45th day and 50th day after flowering. The results showed that the ac-cumulation patterns of palmitic acids, linoleic acids, linolenic acids of high and low erucic acid rapeseed cultivarswere basically the same, but the patterns of oleic acids, eicosenoic acids and erucic acids varied. The correlation a-nalysis revealed that palmitic acid content was negatively correlated to oleic acid content, eicosenoic acid content anderucic acid content, and was significantly positively correlated to linolenic acid content. In the high erucic acid culti-var, the oleic acid had little correlation with linoleic acid and linolenic acid. In the low erucic acid cultivar, the oleicacid had high correlations with linoleic acid and linolenic acid. The results indicated that oleic acid was at the inter-section of the fatty acid extension system and the desaturation system.

关 键 词：甘蓝型油菜 高芥酸 低芥酸 脂肪酸 累积模式 

分 类 号：S511[农业科学—作物学]