外源Spd对盐胁迫下非洲凤仙叶绿素含量及荧光特性的影响  

Effect of exogenous Spd on chlorophyll content and fluorescence characteristics of Impatiens wallerana Hook.f.under salt stress

作　　者：何会流[1] HE Huiliu(Chongqing City Management College,Chongqing 401331,China)

机构地区：[1]重庆城市管理职业学院,重庆401331

出　　处：《内江师范学院学报》2023年第8期67-70,共4页Journal of Neijiang Normal University

基　　金：重庆城市管理职业学院校级科研项目(2022NDXM06)。

摘　　要：以非洲凤仙(Impatiens wallerana Hook.f.)花期苗为试材,研究100 mmol/LNaCl胁迫下不同浓度外源亚精胺(Spd)对其叶绿素含量及荧光特性影响.结果表明:外源Spd(0.6 mmol/L)可显著提高盐胁迫下非洲凤仙叶片光合色素含量,光合荧光参数Fv/Fm、ETR、Y、qP升高,Fo降低.因此,Spd可有效缓解NaCl胁迫对非洲凤仙花的伤害.Using Impatiens wallerana Hook.f.flowering stage seedlings as test materials,the effects of different concentrations of exogenous arginine(Spd)on its chlorophyll content and fluorescence characteristics were studied under 100mmol/L NaCl stress.The results showed that exogenous Spd(0.6mmol/L)could significantly increase the photosynthetic pigment content of Impatiens wallerana Hook.f.leaves under NaCl stress,and the photosynthetic fluorescence parameters Fv/Fm,ETR,Y,qP increased,while Fo decreased.Therefore,Spd can effectively alleviate the damage of NaCl stress to Impatiens wallerana Hook.f.

关 键 词：非洲凤仙 盐胁迫 外源Spd 生理特性 

分 类 号：Q945.79[生物学—植物学]