[1]费昭雪,刘莉丽,胡蝶,等.高温胁迫对西洋杜鹃理化指标的影响[J].北方园艺,2018,42(08):102-105.[doi:10.11937/bfyy.20172920]
　FEI Zhaoxue,LIU Lili,HU Die,et al.Effects of High Temperature Stress on Physiological-biochemical of Rhododendron hybridum[J].Northern Horticulture,2018,42(08):102-105.[doi:10.11937/bfyy.20172920]
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高温胁迫对西洋杜鹃理化指标的影响

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 第42卷 期数: 2018年08 页码: 102-105 栏目: 出版日期: 2018-04-30
Title:
Effects of High Temperature Stress on Physiological-biochemical of  Rhododendron hybridum
作者:
费昭雪1; 刘莉丽1; 胡蝶1; 侯娜2
（1.西北农林科技大学 林学院，陕西 杨凌 712100；2.贵州省林业科学研究院，贵州 贵阳 550005）
Author(s):
FEI Zhaoxue1; LIU Lili1; HU Die1; HOU Na2
(1.Academy of Forestry,Northwest A & F University,Yangling,Shaanxi 712100;2.Guizhou Academy of Forestry,Guiyang,Guizhou 550005)
关键词:
西洋杜鹃; 高温胁迫; 理化指标; 耐热性
Keywords:
Rhododendron hybridum; high temperature stress; physiological and biochemical index; heat resistance
DOI:
10.11937/bfyy.20172920
文献标志码:
A
摘要:
以3年生西洋杜鹃‘粉珍珠’幼苗为试材，分别在22 ℃/14 ℃（14 h/10 h）、30 ℃/22 ℃(14 h/10 h)和38 ℃/30 ℃（14 h/10 h）下胁迫4 d，研究了西洋杜鹃叶片对高温胁迫的理化响应。结果表明：在30 ℃和38 ℃胁迫下，植株遭受不同程度的伤害，38 ℃胁迫对植株造成的伤害程度大于30 ℃。叶绿素含量随着胁迫温度呈逐渐降低趋势；丙二醛含量在30 ℃轻度胁迫时下降，38 ℃重度胁迫时则升高；超氧化物歧化酶活性变化趋势则相反。说明‘粉珍珠’有一定的耐热性，但22 ℃是其较适宜的生长温度。
Abstract:
Three-old-year Rhododendron hybridum  ‘fenzhenzhu’ seedling was taken as test materials,the heat tolerance of R.hybridum and some relative physiological indices were determined and analyzed under the stress conditions of 22 ℃/14 ℃(14 h/10 h),30 ℃/22 ℃(14 h/10 h) and 38 ℃/30 ℃(14 h/10 h) for 4 days.The results showed that at 30 ℃ and 38 ℃,the both stresses led to serious varing degrees damage,and the injury caused by the stress of 38 ℃ was worse than that 30 ℃.Chlorophyll content was increased with the rise of temperature;content of MDA decreased at 30 ℃ light stress condition and increased at heavy stress condition 38 ℃,while the activity of SOD increased at 30 ℃ and decreased at 38 ℃.It indicated that R.hybridum ‘fenzhenzhu’ had a certain heat resistance and the suitable temperature growth was 22 ℃.

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备注/Memo

第一作者简介：费昭雪（1979-），女，陕西咸阳人，硕士，实验师，现主要从事林业分子生物学实验室管理及遗传育种等研究工作。E-mail:feizhaoxue@163.com.责任作者：侯娜（1983-），女，陕西户县人，博士研究生，高级工程师，现主要从事林木生物技术等研究工作。E-mail:houna1018@163.com.基金项目：贵州省科技厅-贵州花卉团队服务企业行动计划资助项目（黔科合平台人才[2016]5711）。收稿日期：2017-10-12

更新日期/Last Update: 2018-05-03