| 高温胁迫对西洋杜鹃理化指标的影响 |
| |
| 引用本文： | 费昭雪,刘莉丽,胡蝶,侯娜.高温胁迫对西洋杜鹃理化指标的影响[J].北方园艺,2018(8):102-105. |
| |
| 作者姓名： | 费昭雪 刘莉丽 胡蝶 侯娜 |
| |
| 作者单位： | 西北农林科技大学 林学院,陕西 杨凌,712100;贵州省林业科学研究院,贵州 贵阳,550005 |
| |
| 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) |
| |
| 摘 要： | 以3年生西洋杜鹃‘粉珍珠’幼苗为试材,分别在22℃/14℃(14h/10h)、30℃/22℃(14h/10h)和38℃/30℃(14h/10h)下胁迫4d,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。
|
| 关 键 词： | 西洋杜鹃 高温胁迫 理化指标 耐热性 |
Effects of High Temperature Stress on Physiological-biochemical of Rhododendron hybridum |
| |
| FEI Zhaoxue,LIU Lili,HU Die,HOU Na.Effects of High Temperature Stress on Physiological-biochemical of Rhododendron hybridum[J].Northern Horticulture,2018(8):102-105. |
| |
| Authors: | FEI Zhaoxue LIU Lili HU Die HOU Na |
| |
| 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℃(14h/10h),30℃/22℃(14h/10h)and 38℃/ 30℃(14h/10h)for 4days.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℃. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
