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Effect of Salt Stress on Photosynthesis and Antioxidant Enzyme Activities of Vicia faba L.Seedling(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年20
Page:
25-30
Research Field:
Publishing date:

Info

Title:
Effect of Salt Stress on Photosynthesis and Antioxidant Enzyme Activities of Vicia faba L.Seedling
Author(s):
WANG Yun; JIN Xiaoxiao; ZHAO Hui; HAO Zhenping
College of Horticulture,Jinling Institute of Technology,Nanjing,Jiangsu 210038
Keywords:
salt stress; Vicia faba L.; photosynthesis; antioxidant enzyme
PACS:
-
DOI:
10.11937/bfyy.20170164
Abstract:
Vicia faba L.was used as material,the treatment was applied via soilless substrate′s pot experiment.The effect of salt stress on growth and physiology characteristics were studied.The experiment was carried out using ‘No.6 Tongcanxian’ to explore effects druing 12 days of NaCl stress (0,50,100,150 mmol?L-1) on biomass,net photosynthetic rate (Pn),stomatal conductivity (Gs),intercellular CO2 concentration (Ci),transpiration rate (Tr),chlorophyll (Chl),the activity of antioxidase (SOD,POD,CAT) and the MDA content.The results showed that NaCl stress increased plant dry weight at low salt concentration,while at high concentration the dry weight decreased 64.3% and Pn,Tr,Gs and Ci in seedling were decreased 19.7%,56.3%,74.0% and 61.2%,respectively.Comparing with the control group,the chlorophyll (Chl a and Chl b) content and Chl(a+b) content both displayed descending.Under the lower NaCl concentration,the activity of SOD increased,on the other hand,under the high concentration the activity decreased.The activity of POD content increased with the increasing of NaCl concentration and time.The CAT activity was the highest when salt concentration was 150 mmol?L-1 on the 9th day,then decreased.With increasing stress degree the MDA content increased.Growth and index of physiology could all be regarded as indexes for evaluation of Vicia faba L.in salt adaptability.

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Last Update: 2017-10-31