Chlorophyll Fluorescence Response of Persimmon Plants under Salt Stress  

作　　者：Xining GENG Lihua XIE Jingwen XU Ruiyuan WANG 

机构地区：[1]Pingdingshan University,Henan Province Key Laboratory of Germplasm Innovation and Utilization of Eco-economic Wood Plant,Pingdingshang 467000,China

出　　处：《Medicinal Plant》2023年第5期42-44,共3页药用植物：英文版

基　　金：Supported by Science and Technology Research Project of Henan Provincial Science and Technology Department(222102110444);Introduction of Talent of Pingdingshan University(PXY-BSQD-202109).

摘　　要：[Objectives]To study the photosynthetic response mechanism of persimmon seedlings to salt stress.[Methods]The chlorophyll fluorescence parameters of Diospyros virginiana and Diospyros lotus seedlings under 4%salt stress were studied by pot culture salt control method,including the minimal fluorescence(F_(0)),maximum fluorescence(F_(m)),potential activity of PS II(F_(v)/F_(0)),maximum photochemical efficiency of PS II(F_(v)/F_(m)),electron transport rate(ETR),actual photochemical efficiency of PS II(Y II),and photochemical quenching coefficient(q_(p)).[Results]Under 4%salt stress,the maximum fluorescence(F_(m)),maximum photochemical efficiency of PS II(F v/F m),and photochemical quenching coefficient(q_(p))of two persimmon plants decreased with time.The potential activity of PS II(F_(v)/F_(0)),actual photochemical efficiency of PS II(Y_(II)),and electron transport rate(ETR)decreased under salt stress.[Conclusions]This study indicates that the PS II reaction center in the persimmon leaves was damaged and the electron transport at the acceptor side was damaged under salt stress.It is expected to lay a foundation for the analysis of salt-tolerance mechanism of persimmon plants.

关 键 词：Chlorophyll fluorescence Salt stress Diospyros virginiana Diospyros lotus 

分 类 号：X503.23[环境科学与工程—环境工程]