|Table of Contents|

Mitigation Effect of 2,4-Epibrassinolide on Cucumber Seedlings Under Cadmium Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年20
Page:
35-41
Research Field:
Publishing date:

Info

Title:
Mitigation Effect of 2,4-Epibrassinolide on Cucumber Seedlings Under Cadmium Stress
Author(s):
ZHAO HongXU FenfenYU ShulingZHENG YitingFU Shiting
(Department of Life Science,Shangrao Normal College,Shangrao,Jiangxi 334001)
Keywords:
cucumber24-Epibrassinolidecadmium stressmitigation effect
PACS:
-
DOI:
10.11937/bfyy.20220655
Abstract:
Cucumber variety ‘Jinyou 35’ were used as experimental material,effects of spraying different concentrations (0.05,0.1,0.5,1.0 mg·L-1) EBR on the growth,root and antioxidant enzyme activities,osmotic substance and MDA contents in cucumber seedlings were studied by hydroponic method of nutrient solution under cadmium stress,in order to provide reference for cadmium tolerance cultivation of cucumber.The results showed that 10 mg·L-1 cadmium treatment significantly inhibited the morphological indicators and biomass accumulation of cucumber seedlings,decreased the activities of SOD,POD,CAT and root,increased the contents of proline,soluble sugar,soluble protein and MDA.Under cadimium stress,the antioxidant enzyme activities,root activity,osmotic substance contents of cucumber seedlings were significantly increased,while the content of MDA was significantly decreased,all growth indicators were improved in different extent after spraying EBR at different concentrations.Compared with cadimium stress alone,spraying 0.5 mg·L-1 EBR increased the activities of SOD,POD,CAT and root of cucumber seedings by 75.81%,45.08%,59.98%,70.64% respectively,increased the contents of proline,soluble sugar,soluble protein by 69.83%,90.52%,40.38% respectively,decreased the MDA content by 38.18%.In conclusion,spraying EBR could reduce the level of membrance lipid peroxidation caused by cadmium stress,mitigate the inhibition of cadmium stress on growth of cucumber seedlings,which could be attributed to the improving of the antioxidant and osmotic adjustment ability.EBR concentration of 0.5 mg·L-1 was the best.

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Last Update: 2022-12-21