|Table of Contents|

Effects of Exogenous Melatonin Treatment Period on Growth of Cucumber Seedlings Under High Temperature Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2025年3
Page:
41-47
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous Melatonin Treatment Period on Growth of Cucumber Seedlings Under High Temperature Stress
Author(s):
LIU SonghuLIANG ZhihaoLI YihangHUANG XiangSHEN JunZHU Qingsong
(College of Horticulture,Xinyang Agriculture and Forestry University/Key Laboratory of Horticultural Plant Genetic Improvement in Dabie Mountain Area of Xinyang City,Xinyang,Henan 464000)
Keywords:
cucumberhigh temperaturestresstreatment periodmelatoninseedling growth
PACS:
S 642.2
DOI:
10.11937/bfyy.20243150
Abstract:
Taking the cucumber variety ‘Koukoucui’ as the test material,100 μmol·L-1 exogenous melatonin (MT) was sprayed on the leaves of cucumber seedlings under high temperature stress.The effects of different treatment periods of exogenous MT on the phenotype and physiological and biochemical indicators of cucumber seedlings were studied,in order to provide reference for solving the problem of high temperature stress encountered during the growth process of cucumber seedlings.The results showed that MT treatment on cucumber seedlings at the 1st day of high temperature stress could significantly promote the growth of seedling height,leaf length,leaf width and stem diameter.It could significantly increase chlorophyll content,superoxide dismutase (SOD) activity,peroxidase (POD) activity and root activity of cucumber seedlings,and reduce malondialdehyde (MDA) accumulation and proline content.The comprehensive analysis showed that MT treatment on the 1st day of high temperature stress could effectively alleviate the damage caused by high temperature stress,improve the heat resistance of plants and promote the growth of cucumber seedlings,which was the appropriate period for exogenous MT treatment of cucumber seedlings under high temperature stress.

References:

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Last Update: 2025-02-13