水杨酸对冬枣内源激素含量及保鲜效果的影响

Effects of Salicylic Acid(SA) on Endogenous Hormone Content and Preservation Effect of "Dong" Jujube

[目的]研究水杨酸对冬枣内源激素含量和保鲜效果的影响。[方法]以浓度20、40、80和120 mg/L的水杨酸喷洒冬枣,同时以清水为对照。在10℃贮藏过程中,分别于1、5、9、13、17和21 d进行赤霉素(GA)、生长素(IAA)、玉米素核苷(ZR)、脱落酸(ABA)含量及贮藏品质指标的测定。[结果]适当浓度的水杨酸处理可提高冬枣GA、IAA和ZR含量,降低ABA含量,使冬枣保持较高的可溶性糖和VC含量,延缓冬枣的衰老进程。所有水杨酸处理均可提高冬枣的含水量和硬度。[结论]水杨酸处理冬枣的适宜浓度为20 mg/L。

[Objective]The research was to study effects of SA on endogenous hormone content and preservation effect of Dong jujube.[Method]Dong jujube was spayed with SA at different concentrations（20,40,80 and 120 mg/L）,and clear water was used as control.During the storage at 10℃,contents of gibberellin（GA）,auxin（IAA）,zeatin riboside（ZR）,abscisic acid（ABA） and indexes of storage quality of Dong jujube were determined at day 1,5,9,13,17and 21 respectively.[Result]Suitable concentration of SA could increase GA,IAA and ZR content of Dong jujube,decrease ABA content,make Dong jujube contain higher soluble sugar and vitamin c content,and delay its senescing process.All concentration of SA could increase water content and hardness of ＂Dong＂ jujube.[Conclusion] The suitable concentration of SA treating ＂Dong＂ jujube was 20 mg/L.