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王珺, 李贺鹏, 黄云峰, 岳春雷, 张晓勉. 盐胁迫对夹竹桃幼苗生长及光合特性的影响[J]. 浙江林业科技, 2016, 36(5): 45-50.
引用本文: 王珺, 李贺鹏, 黄云峰, 岳春雷, 张晓勉. 盐胁迫对夹竹桃幼苗生长及光合特性的影响[J]. 浙江林业科技, 2016, 36(5): 45-50.
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WANG Jun, LI He-peng, HUANG Yun-feng, YUE Chun-lei, ZHANG Xiao-mian. Effect of Salt Stress on Growth and PhotosyntheticProperties of Nerium indicum Seedlings[J]. Journal of Zhejiang Forestry Science and Technology, 2016, 36(5): 45-50.
Citation: WANG Jun, LI He-peng, HUANG Yun-feng, YUE Chun-lei, ZHANG Xiao-mian. Effect of Salt Stress on Growth and PhotosyntheticProperties of Nerium indicum Seedlings[J]. Journal of Zhejiang Forestry Science and Technology, 2016, 36(5): 45-50.
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盐胁迫对夹竹桃幼苗生长及光合特性的影响

Effect of Salt Stress on Growth and PhotosyntheticProperties of Nerium indicum Seedlings

    摘要
  • 摘要: 采用盆栽试验研究了不同浓度（0，0.3%，0.6%，0.9%）NaCl 盐分胁迫夹竹桃（Nerium indicum）1 年生幼苗生长及光合特性的变化。结果表明，在盐胁迫初期，随着胁迫浓度的升高，夹竹桃幼苗叶片的叶绿素总含量（Chl）、净光合速率（Pn）、PSⅡ最大光化学效率（Fv/Fm）、PSⅡ潜在光化学效率（Fv/Fo）均呈逐渐下降的趋势；随胁迫时间的增加，3 种盐胁迫处理的各项测定指标均恢复或接近对照水平，其中低浓度盐胁迫处理组的各指标高于对照组和其他处理组，但均与对照间差异不显著，表明夹竹桃对盐胁迫有较强的自我修复性和适应性，耐盐性较强，且低浓度盐胁迫对夹竹桃幼苗生长和光合作用有一定的促进作用。

     

    Abstract: Experiment was conducted on 1-year seedling growth and photosynthetic properties of Nerium indicum under 0, 0.3%, 0.6% and 0.9%NaCl stress.The results showed that chlorophyll content (Chl), net photosynthetic rate (Pn), PSⅡ maximal photochemical efficiency (Fv/Fm) and PSⅡ potential photochemical efficiency (Fv/Fo)decreased along with the increased of NaCl concentration during the initial period of the experiment.But with the duration of the experiment, determined index of different treated seedlings were close to that of the control, seedlings treated with 0.3%NaCl had even higher index than that of the control and treated with 0.6% and 0.9% NaCl. The result indicated that N. indicum had strong adaptabilityand tolerance to lower NaCl stress and even had better growth and photosynthetic properties.

     

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