低温胁迫下没食子酸丙酯对黄瓜幼苗生理生化特性的影响  

Propyl gallate affects physiological and biochemical characteristics of cucumber seedlings under low temperature stress

作　　者：高文红 李鹏丽 车寒梅 赵敏[3] GAOWenhong;LI Pengli;CHE Hanmei;ZHAO Min(Handan Vocaional College of Science and Technoligy,Handan 056046,Hebei,China;Handan Vegetable Technology Promotion Station,Handan 056000,Hebei,China;Hebei University of Engineering,Handan 056038,Hebei,China)

机构地区：[1]邯郸科技职业学院,河北邯郸056046 [2]邯郸市蔬菜技术推广站,河北邯郸056000 [3]河北工程大学,河北邯郸056038

出　　处：《中国瓜菜》2022年第8期70-74,共5页China Cucurbits And Vegetables

基　　金：邯郸市科学技术研究与发展计划项目(20312904012);河北省现代农业产业技术体系(HBCT2018030408)。

摘　　要：为探究没食子酸丙酯(PG)对低温胁迫下黄瓜幼苗抗冷性的影响,以黄瓜津优35为试材,在3叶1心时期,采用1.0、1.5、2.0、2.5 mmol·L^(-1)的PG溶液及去离子水(CK)叶面喷施后进行低温胁迫处理,测定黄瓜幼苗生理生化指标,利用平均隶属函数进行抗冷性强弱评价。结果表明,不同浓度外源PG处理均能提高黄瓜幼苗抗冷性,低温胁迫6 d后,2.0 mmol·L^(-1) PG溶液预处理效果最佳,与CK相比,相对电导率和丙二醛含量分别显著降低43.81%和42.53%,可溶性糖和叶绿素含量分别显著提高40.76%和57.29%,株高显著增高0.58 cm,其平均隶属函数值为0.93。说明2.0 mmol·L^(-1)的PG预处理对缓解黄瓜幼苗冷害最有效。To explore the effect of propyl gallate(PG)on the chilling tolerance of cucumber seedling under low temperature stress Jinyou 35 was used as test material.Seedlings with three leaves treated with 1.0,1.5,2.0,2.5 mmol·L^(-1) PG solution and deionized water(CK)on the leaf surface were used for low temperature stress treatment.The physiological and biochemical indexes of cucumber seedling were determined.Chilling tolerance was evaluated by using the average membership function.The results showed that different concentrations of exogenous PG improved chilling tolerance of cucumber seedlings.After 6 days of low temperature stress,the pretreatment effect of 2.0 mmol·L^(-1) PG solution was the best.Compared with the control,the relative electrical conductivity and malondialdehyde content decreased by 43.81%and 42.53%respectively,the soluble sugar and chlorophyll content increased by 40.76%and 57.29%respectively,and the plant height increased by 0.58 cm,with an average membership function value of 0.93.The 2.0 mmol·L^(-1) PG pretreatment was most effective to alleviate the chilling injury of cucumber seedlings.

关 键 词：黄瓜 没食子酸丙酯 低温胁迫 生理生化特性 

分 类 号：S642.2[农业科学—蔬菜学]