萝卜种子萌发的逆温耐性诱导研究  

The Induction for Adverse Temperature Tolerance During the Germination of Radish Seeds

作　　者：王广印[1] 陈碧华[1] 陈群[1] 莫一帆[1] 高爱霞[1] 

机构地区：[1]河南科技学院,新乡453003

出　　处：《植物研究》2008年第4期482-485,共4页Bulletin of Botanical Research

基　　金：河南省自然科学基金项目(0611031000);河南省科普示范点建设项目(豫科[2005]157号);河南省教育厅科研项目(2007210012)

摘　　要：以萝卜种子为试材,研究不同温度预处理对萌发期萝卜种子逆温耐性的影响。结果表明:萝卜种子在低于15℃和高于35℃下萌发,种子活力显著下降,而通过适度的温度胁迫处理,可提高萝卜种子在高温(35℃)下的萌发活力。15℃和25℃分别是预处理的适宜低温和高温,6 h是低温(15℃)预处理的适宜时间。萝卜种子经高温(30℃)预处理12 h后,在随后的低温(10℃)下萌发,也提高其种子活力,说明萝卜种子对高温和低温胁迫具有交叉适应性。The changes of adverse temperature tolerance during the germination of radish seeds pretreated by different temperatures were studied. Results showed that the vigor of germination remarkably decreased when the seeds were germinated under the temperatures of higher than 35℃ or lower than 15℃. The mild temperature stress could improve the germination ability of radish seed greatly in high temperature（35℃）. The optimal pretreatment low and high temperature are 15℃ and 25℃ respectively. The optimal pretreatment time is 6 hours （ at 15℃ ）. The pretreatment of high temperature （at 30℃, 12 hours） also could improve the seed vigor in low temperature subsequently, which shows that the seeds have cross adaptation for heat and chilling stresses.

关 键 词：萝卜 种子活力 逆温 耐性诱导 预处理 交叉适应性 

分 类 号：S631.1[农业科学—蔬菜学]