芥甘杂交黄籽油菜籽粒中植物激素的变化及其对脂肪酸成分与油脂含量的影响  

Dynamic Change of Phytohormones in Seeds of Yellow-seeded Canola Progeny from Hybridization between Brassica juncea and Brassica napus and Its Effects on Fatty Acid Composition and Oil Content

作　　者：郭滢 崔看[1,2] 覃磊 张小波[1,2] 童建华 刘忠松[3] 夏石头[1,2] GUO Ying;CUI Kan;QIN Lei;ZHANG Xiaobo;TONG Jianhuang;LIU Zhongsong;XIA Shitou(Hunan Agricultural University Hunan Provincial Key Laboratory of Phytohormones,Changsha 410128,China;Hunan Agricultural University College of Bioscience and Biotechnology,Changsha 410128,China;Hunan Agricultural University College of Agronomy,Changsha 410128,China)

机构地区：[1]湖南农业大学植物激素与生长发育湖南省重点实验室,长沙410128 [2]湖南农业大学生物科学技术学院,长沙410128 [3]湖南农业大学农学院,长沙410128

出　　处：《激光生物学报》2019年第6期548-555,共8页Acta Laser Biology Sinica

基　　金：国家自然科学基金面上项目(31971836);湖南省教育厅科学研究重点项目(17A095)

摘　　要：以遗传背景相似、种子颜色不同的5个甘蓝型油菜品系为材料,研究甘蓝型油菜种子发育过程中玉米素核苷(ZR)、生长素(IAA)和脱落酸(ABA)含量的动态变化及其对籽粒产量和油脂成分的影响。结果表明,开花授粉后10~20 d,ZR呈上升趋势,其中黄籽中ZR较黑籽积累更快含量更高,IAA在籽粒中大量积累;开花授粉后20~25 d,黄籽中的IAA含量均显著高于黑籽;ABA浓度先呈上升趋势,逐渐积累ABA,之后开始又稍有下降然后维持在一定水平。授粉后10 d油菜籽粒油酸含量逐步升高,黄籽中的油酸、亚油酸含量均显著高于黑籽,黄籽含油量极显著高于黑籽,说明籽粒发育前期和中期较高浓度的ZR和IAA有利于油酸、亚油酸和油脂的积累。Using five different lines of Brassica napus with similar genetic backgrounds but different seed colors as materials,the changes of zeatin riboside(ZR),auxin(IAA)and abscisic acid(ABA)contents and their regulatory roles during the development of rapeseed were investigated to study the effects of plant hormones on content and component of oil in canola.The results showed that ZR increased 10~20 days after pollination.The content of zeatin riboside(ZR)in yellow seeds accumulated to a higher level than that in black seeds;IAA accumulated in large quantities in seeds,and its content in yellow seeds was significantly higher than that in black seeds 20-25 days after pollination;ABA concentration also showed an upward trend,and then gradually accumulate.It declined slightly after and then maintained at a certain level.After 10 days of pollination,the oleic acid content in canola seeds increased gradually.The oleic acid and linoleic acid content in yellow seeds were significantly higher than those in black seeds,and the oleic acid accumulation efficiency was also significantly higher than that in black-seeded ones.The oil content of yellow seeds is significantly higher than that of black seeds at 0.01 level.The results showed that higher concentrations of ZR and IAA in the early and middle stages of seeds development were beneficial to the accumulation of oleic acid,linoleic acid and rape oil.

关 键 词：黄籽油菜 植物激素 脂肪酸 油脂 千粒重 

分 类 号：Q945[生物学—植物学]