|本期目录/Table of Contents|

[1]李爱,孙汪亮,李林,等.外源褪黑素对干旱胁迫下紫苏幼苗生长的影响[J].江苏农业科学,2018,46(02):70-73.
 Li Ai,et al.Impact of exogenous melatonin on growth of Perilla frutescens seedlings under drought stress[J].Jiangsu Agricultural Sciences,2018,46(02):70-73.
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外源褪黑素对干旱胁迫下紫苏幼苗生长的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第46卷
期数:
2018年02期
页码:
70-73
栏目:
园艺与林学
出版日期:
2018-01-20

文章信息/Info

Title:
Impact of exogenous melatonin on growth of Perilla frutescens seedlings under drought stress
作者:
李爱 孙汪亮 李林 孙锋
天津农学院园艺园林学院,天津 300384
Author(s):
Li Aiet al
关键词:
紫苏幼苗褪黑素干旱胁迫聚乙二醇植物生长调节剂
Keywords:
-
分类号:
S567.21
DOI:
-
文献标志码:
A
摘要:
为探究外源褪黑素对干旱胁迫环境下紫苏幼苗生长的影响,以紫苏为研究材料,利用聚乙二醇-6000(polyethylene glycol,简称PEG-6000)模拟干旱环境,并采用不同浓度的褪黑素处理紫苏幼苗,测定幼苗叶片长宽比、相对含水量、丙二醛(malonic dialdehyde,简称MDA)含量、超氧化物歧化酶(superoxide dismutase,简称SOD)与过氧化物酶(peroxidase,简称POD)的活性以及可溶性蛋白含量。结果表明,10% PEG-6000溶液模拟干旱环境显著抑制紫苏幼苗的生长,而在干旱胁迫下通过外施300 μmol/L褪黑素,幼苗叶片长宽比达到最大值,与10% PEG-6000胁迫处理相比提高9.15%;当褪黑素浓度为100 μmol/L时紫苏幼苗相对含水量达到最大值,与10% PEG-6000胁迫处理相比显著提高4.57%,SOD活性达到最高值,与10% PEG-6000胁迫处理相比提高8.51%;当褪黑素浓度为 500 μmol/L 时,MDA含量达到最低值,与10% PEG-6000胁迫处理相比显著下降43.93%,POD活性达到最高值,与10% PEG-6000胁迫处理相比显著提高26.79%,同时可溶性蛋白含量达到最低值,与10% PEG-6000胁迫处理相比显著下降8.51%。结果表明,中高浓度的外源褪黑素处理可降低干旱胁迫造成的伤害,增强紫苏幼苗的抗旱能力。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2017-06-01
基金项目:国家自然科学基金青年科学基金(编号:31300564);天津市应用基础与前沿技术研究计划(编号:14JCQNJC15000);天津农学院科学研究发展基金计划(编号:2016NYB01);天津市“131”创新型人才培养工程。
作者简介:李爱(1984—),女,河北石家庄人,博士,讲师,从事植物逆境生理与分子生物学研究。Tel:(022)23781301;E-mail:lovelee@tjau.edu.cn。
更新日期/Last Update: 2018-01-20