|Table of Contents|

Effect of Exogeneous Melatonin on Physiological Characteristic of Cabbage Seedlings Under High Temperature Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年20
Page:
12-17
Research Field:
Publishing date:

Info

Title:
Effect of Exogeneous Melatonin on Physiological Characteristic of Cabbage Seedlings Under High Temperature Stress
Author(s):
ZENG Qingdong; XU Zhongmin; ZHANG Enhui; GUO Jia; LI Shengjuan
College of Horticulture,Northwest A & F University,Yangling,Shaanxi 712100
Keywords:
melatonin; pretreatment; high temperature stress; cabbage seedlings; physiological characteristic
PACS:
-
DOI:
10.11937/bfyy.20172192
Abstract:
In order to study the effect of exogenous melatonin on the physiological indexes of cabbage seedlings,the leaves of a cabbage variety ‘Qingan 58’ were sprayed with different concentration of melatonin.The results showed that pretreatment of exogenous MT could reduce the effect of high temperature on the chlorophyll content of cabbage seedlings.Pretreatment of exogenous MT could significantly reduce the relative conductivity and the malondialdehyde (MDA) content,increase the soluble protein content,and enhance the activity of super oxide dismutase (SOD) of cabbage leaves under high temperature stress.The results showed that pretreatment of MT decreased the influence of high temperature stress on the photosynthesis of cabbage seedling (chlorophyll),reduced electrolyte leakage,and protected the integrity of the lipid membrane.It reduced the membranous peroxide level of cabbage seedlings under high temperature stress,increased the activity of antioxidant enzymes,alleviated the harm caused by high temperature stress on seedling,and increased resistance of seedling to high temperature stress.

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Last Update: 2017-10-31