文献类型：期刊文献

中文题名：NaCl胁迫对五叶地锦生长及某些生理特性的影响

英文题名：Effect of Salt Stress on the Growth and Some Physiological Characteristics in Parthenocissus quinquefolia Cuttings

作者：刘会超[1] 孙振元[1] 彭镇华[1]

第一作者：刘会超

机构：[1]中国林业科学研究院林业研究所

年份：2004

卷号：40

期号：6

起止页码：63-67

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家"863"项目 ( 2 0 0 3AA2 44 0 3 0 );"948"项目 ( 2 0 0 0 -4 -2 3 )资助

语种：中文

中文关键词：NaCl胁迫;五叶地锦;生长;生理特性;光合速率;盐胁迫

外文关键词：Parthenocissus quinquefolia, Stress of NaCl, Growth, Physiological characteristics

分类号：Q949.756.3;S718.43

摘要：用不同浓度的NaCl处理五叶地锦扦插苗 ,研究了盐胁迫对五叶地锦生长及生理特性的影响。结果表明 :小于 5 0mmol·L- 1 的NaCl处理 ,对五叶地锦生长及生理特性没有明显的影响 ;等于或大于 10 0mmol·L- 1 的NaCl处理 ,对五叶地锦的生长有明显的抑制作用 ,而且光合速率、蒸腾速率、气孔导度等生理指标值急剧降低 ,膜相对透性、MDA含量等指标明显增高。由此可以认为 ,10 0mmol·L- 1 NaCl是五叶地锦盐胁迫伤害的阈值。NaCl胁迫下光合作用的下降与膜的伤害、细胞内K+ 、Ca2 + 、Na+ 3种离子平衡关系破坏及糖的反馈性抑制有关 ,而与气孔导度和胞间CO2 浓度无关。盐胁迫下 ,叶片中可溶性糖、脯氨酸以及K、Ca、Na等 3种元素的含量增高。五叶地锦可能通过离子浓度和可溶性糖浓度的提高进行适度的渗透调节 ,以适应NaCl的胁迫。
The cuttings of Parthenocissus quinquefolia were treated with 0～300 mmol·L -1 NaCl. The growth,and some physiological characteristics were investigated after 7 days of treatment. The results showed that plants grew and developed normally in 25 and 50 mmol·L -1 NaCl. When the concentration of NaCl equal to or more than 100 mmol·L -1, the growth of treated plants were inhibited, the rates of photosynthesis and transpiration,as well as stomatal conductance were markedly decreased; At the same time,membrane permeability and MDA content markedly increased. It was possible that the concentration of NaCl 100 mmol·L -1 was the key value of salt stress. Under the salt stress, the contents of soluble sugar,proline, K+, Ca 2+, and Na+ increased, especially when the content of NaCl above 100 mmol·L -1, except proline, the difference of treated plants and control was significant. It was suggested that P. quinquefolia cuttings adjusted the stress of osmotic pressure by increasing the content of soluble sugar and K+, Ca 2+, and Na+.