[1]曾庆栋,许忠民,张恩慧,等.外源褪黑素对高温胁迫下甘蓝幼苗生理特性的影响[J].北方园艺,2017,41(20):12-17.[doi:10.11937/bfyy.20172192]
　ZENG Qingdong,XU Zhongmin,ZHANG Enhui,et al.Effect of Exogeneous Melatonin on Physiological Characteristic of Cabbage Seedlings Under High Temperature Stress[J].Northern Horticulture,2017,41(20):12-17.[doi:10.11937/bfyy.20172192]
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外源褪黑素对高温胁迫下甘蓝幼苗生理特性的影响

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 第41卷 期数: 2017年20 页码: 12-17 栏目: 出版日期: 2017-10-30
Title:
Effect of Exogeneous Melatonin on Physiological Characteristic of Cabbage Seedlings Under High Temperature Stress
作者:
曾庆栋; 许忠民; 张恩慧; 郭佳; 李升娟
西北农林科技大学 园艺学院，陕西 杨凌 712100
Author(s):
ZENG Qingdong; XU Zhongmin; ZHANG Enhui; GUO Jia; LI Shengjuan
College of Horticulture,Northwest A & F University,Yangling,Shaanxi 712100
关键词:
褪黑素; 预处理; 高温胁迫; 甘蓝幼苗; 生理特性
Keywords:
melatonin; pretreatment; high temperature stress; cabbage seedlings; physiological characteristic
DOI:
10.11937/bfyy.20172192
文献标志码:
A
摘要:
以甘蓝品种“秦甘58”为试材，对甘蓝叶片喷施不同浓度褪黑素(MT），研究了外源褪黑素预处理对高温胁迫下甘蓝幼苗各项生理指标的影响。结果表明：外源MT预处理能够降低高温对甘蓝幼苗叶片中叶绿素含量的影响，外源MT预处理能显著降低高温胁迫下甘蓝幼苗叶片相对电导率、丙二醛 (MDA)含量，增加可溶性蛋白质含量和增强叶片中超氧化物歧化酶 (SOD)活性。说明 MT预处理能够减弱高温胁迫对甘蓝幼苗光合(叶绿素）的影响，减少电解质的外渗，保护脂膜的完整性，能降低高温胁迫条件下甘蓝幼苗叶片的细胞膜膜质过氧化水平，提高相关抗氧化酶的活性，缓解高温对甘蓝幼苗的伤害，提高甘蓝幼苗对高温胁迫的抵御能力。
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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备注/Memo

第一作者简介：曾庆栋(1990-），男，硕士研究生，研究方向为甘蓝种质资源与遗传育种。E-mail：qingdongzeng@sina.com.

责任作者：许忠民(1971-），男，博士，副研究员，现主要从事甘蓝种质资源与遗传育种等研究工作。E-mail:xuzhongmin2003@126.com.
基金项目：“十三五”国家重点研发计划资助项目(2016YFD0101702）；国家大宗蔬菜产业技术体系资助项目(CARS-25）；杨凌产学研用协同创新重大资助项目(2016CXY-10）。
收稿日期：2017-07-10

更新日期/Last Update: 2017-10-31