|Table of Contents|

Effects of Methionine-selenium on Physiological Index of  Cucumber Seedling Leaves Under Drought Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年06
Page:
14-18
Research Field:
Publishing date:

Info

Title:
Effects of Methionine-selenium on Physiological Index of  Cucumber Seedling Leaves Under Drought Stress
Author(s):
RAO LingLUO QingxiZHAO Xiaohong
(College of Horticulture and Landscape,Southwest University,Chongqing 400715)
Keywords:
cucumbermethionine-seleniumdrought stressosmotic substanceantioxidant system
PACS:
-
DOI:
10.11937/bfyy.201706003
Abstract:
In order to explore the influences of different concentrations of methionineselenium on the physiological indexes of cucumber seedlings(‘Qingbai’),the experiment were conducted under drought stress induced by polyethylene glycol (PEG-6000) in a nutrient solution culture system.The results showed that methionine-selenium treatment at concentrations of 10 mg?L-1,20 mg?L-1,40 mg?L-1 decreased MDA content,O?[TX-*4]2 production rate,and H2O2 content,raised osmotic substance (free proline and soluble sugar content),antioxidant enzyme activities (SOD,POD,CAT and APX),and raised antioxidant content (GSH and AsA).It indicated that the protective effect of suitable concentration of methionine-selenium on the toxicity of cucumber seedlings under drought stress was described.And the effect of 20 mg?L-1 methionine selenium on alleviating drought stress was the most obvious.

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Last Update: 2017-04-01