低温层积与外源GA3对肉苁蓉种子萌发及其内源GA和ABA含量的影响  

Effects of Cold Stratification and Exogenous Gibberellic Acid(GA_3) on Seed Germination and Contents of Endogenous Gibberellins(GAs) and Abscisic Acid(ABA) in Cistanche deserticola Y.C.Ma

作　　者：陈庆亮[1,2] 王华磊[2] 王志芬[1] 单成钢[1] 翟志席[2] 郭玉海[2] 

机构地区：[1]山东省农业科学院原子能农业应用研究所,济南250100 [2]中国农业大学农学与生物技术学院中药材研究中心,北京100193

出　　处：《植物生理学通讯》2009年第3期270-272,共3页Plant Physiology Communications

基　　金：北京市科技计划(D07060200880701);河北省科技攻关项目(03276408D-4);重大基础研究前期研究专项(2004CCA01200)

摘　　要：研究低温层积对肉苁蓉种子胚率、内源赤霉素（GA）和脱落酸（ABA）含量以及外源赤霉素（GA3）对低温层积不同时间种子萌发率影响的结果表明：低温层积可以提高种子的胚率及其GA的含量,降低其ABA含量;层积120～150d的肉苁蓉种子经外源GA3处理后,其萌发率可以达到70%以上;层积120d是外源GA3促进种子萌发的临界点。The effects of cold stratification on embryo ratio and contents of endogenous GA and ABA in the seeds of Cistanche deserticola were investigated, and the effects of exogenous GA3 on the germination rate of C. desertcola seeds at different stages of cold stratification were also studied. The results indicated that cold stratification increased the embryo ratio and the contents of GAs, but reduced the content of ABA in the seeds of C. deserticola. The germination rate of C. desertcola seeds stratified for 120 to 150 d were more than 70% with the treatment of exogenous GA3. The critical point of C.desertcola seeds germination rate was in 120 d after cold stratification with the treatment of exogenous GA3.

关 键 词：肉苁蓉 低温层积 种子萌发 赤霉素(GA) 脱落酸(ABA) 

分 类 号：Q945[生物学—植物学]