|Table of Contents|

Effect of Different Concentration of Salt Stress on Chlorophyll Fluorescence Parameters of Ulmus pumila Seedlings

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年05
Page:
90-94
Research Field:
Publishing date:

Info

Title:
Effect of Different Concentration of Salt Stress on Chlorophyll Fluorescence Parameters of Ulmus pumila Seedlings
Author(s):
DU Mei′e1; WANG Hongxia2; ZHANG Wei1; REN Yu1; MA Lijie1
(1.Department of Ecological Engineering in Ordos Vocational College of Eco-Environment,Ordos,Inner Mongolia 017010;2. Ordos Forestry Bureau,Ordos,Inner Mongolia 017010)
Keywords:
Ulmus pumila; salt stress; chlorophyll fluorescence parameters; net photosynthetic rate
PACS:
-
DOI:
10.11937/bfyy.20182505
Abstract:
Taking one-year-old cutting seedlings of Ulmus pumila as the test object,the different concentrations of NaCl solutions were used to carry out salt stress for Ulmus pumila in order to research on the changes of chlorophyll fluorescence parameters and net photosynthetic rate.A pot experiment was carried out to investigate the effects of different NaCl levels (CK:0.00%,T1:0.20%,T2:0.40%,T3:0.60%) on chlorophyll fluorescence parameters of seedlings Ulmus pumila.The results showed that with the increasing of the NaCl concentration,the value of Fv/Fm,ФPSⅡ,ETR gradually reduced,whereas the qN and qP firstly increased and then decreased.In addition,the fluorescence parameters of T3 was significantly lower than other treatments.The net photosynthetic rate firstly increased but late decreased with the increasing of salt stress.Moreover,the Pn of T1 was higher than other treatments.Therefore,the high concentration caused severe inactivation of PSⅡ,reduction of chlorophyll fluorescence parameters.It also caused more damage in the photosynthetic system.

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Last Update: 2019-04-02