通过β-氨基丁酸激发效应增强烟草对干旱和低温胁迫的耐受能力  

Priming effect of β-aminobutyric acid in alleviating drought and low-temperature stress in tobacco

作　　者：张丽娜[1] 董建江[1] 刘炎红[1] 邵伏文[1] 陈学平[2] ZHANG Lina1, DONG Jianjiang1, LIU Yanhong1, SHAO Fuwen1, CHEN Xueping2(1. Anhui Tobacco Company, Hefei 230071; 2. Tobacco and Health Research Center, University of Science and Technology of China, Hefei 23002)

机构地区：[1]安徽省烟草公司,合肥230071 [2]中国科学技术大学烟草与健康研究中心,合肥230026

出　　处：《安徽农业大学学报》2018年第1期171-174,共4页Journal of Anhui Agricultural University

基　　金：安徽省烟草公司"皖南烟区初烤烟存储质量提升机理及关键技术研究"(20160551011)资助

摘　　要：为研究外源β-氨基丁酸(BABA)处理对烟草幼苗抗低温和抗干旱的调节作用,通过使用不同浓度BABA对烟草幼苗进行喷叶和灌根处理后,再进行干旱和低温胁迫处理,最后进行存活率的测定。结果表明,在受到干旱胁迫时,通过5 mmol·L^(-1)和10 mmol·L^(-1)外源BABA分别进行喷施和灌根处理后,烟草幼苗的存活率出现大幅升高;而在受到低温胁迫时,通过5 mmol·L^(-1)和10 mmol·L^(-1)外源BABA分别进行喷施和灌根处理后,其存活率也出现较大幅度的提高。分析认为,通过外源BABA处理后,可以有效提高烟草幼苗对于干旱和低温胁迫的耐受能力。In order to study the effect of exogenous BABA（β-aminobutyric acid） on alleviating low temperature and drought stress, tobacco seedlings were treated with different concentrations of BABA by spraying leaves and filling roots, and followed by drought and low temperature stress. After that, the survival rate of the tobacco seedlings was measured. The results showed that the survival rate of the tobacco seedlings was significantly increased when spraying the leaf with 5 mmol·L^（-1） and irrigating the root with 10 mmol·L^（-1） exogenous BABA, respectively, regardless of drought stress or low temperature stress. The results demonstrated that exogenous BABA can effectively improve the tolerance of tobacco seedlings to drought and low temperature stress.

关 键 词：Β-氨基丁酸 烟草 干旱胁迫 低温胁迫 

分 类 号：S572[农业科学—烟草工业]