油菜素内酯对玉米幼苗抗冷性的影响  

Effect of BR on Chilling Resistance of Maize Seedlings

作　　者：周天[1] 周晓梅[1] 胡勇军[2] 姜天亮[2] 郭继勋[1] 

机构地区：[1]东北师范大学草地研究所,吉林长春130024 [2]长春师范学院生物系,吉林长春130032

出　　处：《吉林师范大学学报（自然科学版）》2004年第1期6-8,共3页Journal of Jilin Normal University:Natural Science Edition

基　　金：国家自然科学基金项目 (3 0 1 70 6 6 8)

摘　　要：用油菜素内酯(BR)对玉米进行浸种处理,可以促进幼苗在低温下生长,其株高、干物重和叶片叶绿素含量校对照明显增加.同时,经BR处理的幼苗在低温下生长,与对照相比其组织的电导率下降,可溶性糖含量升高,脯氨酸含量上升.这些变化都与经BR处理的玉米幼苗抗冷性有关.This paper studies on the effects of different concentrations plant growth substance-BR on maize seedlings' growth and chilling resistance. BR treatments can promote maize seedlings growth at sufficiently low growth temperature,improve plant height, weight of dry matter, chlorophll contents.It can decrease the rate electric conductivity of maize seedling tissue,mcrease the contents of proline and soluble sugar. All these changes are concerned with the raising of chilling resistance..

关 键 词：油菜素内酯 玉米 幼苗 抗冷性 植物激素 叶绿素 

分 类 号：S513[农业科学—作物学] Q946.885[生物学—植物学]