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苏打盐碱胁迫对西伯利亚白刺光合和生长的影响

陈志强, 李庆贱, 时瑞亭, 张建秋, 王国柱, 张玉玲, 李悦

陈志强, 李庆贱, 时瑞亭, 张建秋, 王国柱, 张玉玲, 李悦. 苏打盐碱胁迫对西伯利亚白刺光合和生长的影响[J]. 北京林业大学学报, 2011, 33(3): 31-37.
引用本文: 陈志强, 李庆贱, 时瑞亭, 张建秋, 王国柱, 张玉玲, 李悦. 苏打盐碱胁迫对西伯利亚白刺光合和生长的影响[J]. 北京林业大学学报, 2011, 33(3): 31-37.
shu
CHEN Zhi-qiang, LI Qing-jian, SHI Rui-ting, ZHANG Jian-qiu, WANG Guo-zhu, ZHANG Yu-ling, LI Yue. Effects of soda salinealkaline stress on photosynthesis and growth of Nitraria sibirica[J]. Journal of Beijing Forestry University, 2011, 33(3): 31-37.
Citation: CHEN Zhi-qiang, LI Qing-jian, SHI Rui-ting, ZHANG Jian-qiu, WANG Guo-zhu, ZHANG Yu-ling, LI Yue. Effects of soda salinealkaline stress on photosynthesis and growth of Nitraria sibirica[J]. Journal of Beijing Forestry University, 2011, 33(3): 31-37.
shu

苏打盐碱胁迫对西伯利亚白刺光合和生长的影响

  • 1 北京林业大学林木花卉遗传育种教育部重点实验室,林木育种国家工程实验室2 吉林省白城市林业科学院

Effects of soda salinealkaline stress on photosynthesis and growth of Nitraria sibirica

  • 1 Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, National Engineering Laboratory for Tree Breeding, Beijing Forestry University, 100083, P. R. China; 2 The Forestry Academy of Baicheng, Jilin Province, 137000, P. R. China.

摘要

    摘要
  • 摘要: 采用盆栽方法，对西伯利亚白刺进行苏打盐碱胁迫，并对其生长、气体交换参数、叶绿素荧光参数进行初步研究。结果表明：适中的土壤盐碱含量能促进西伯利亚白刺生物量、苗高绝对生长量的增加，在土壤盐碱含量为0.2%时,生物量达到最大，比对照提高27.3%；在高土壤盐碱含量下，净光合速率（Pn）下降主要是由非气孔限制因素造成的，叶片含水量（LWC）和叶绿素（Chl）含量下降是导致Pn下降的部分原因；胞间CO2浓度（Ci）上升的部分原因可能是气孔不均匀性开闭造成的；叶片类胡萝卜素（Car）含量随土壤盐碱含量提高，先降后升，非光化学猝灭系数(NPQ)变化不显著，表明西伯利亚白刺可以通过提高Car含量来保持较高的NPQ。生物量与Pn、表观光能利用效率（LUE）、表观CO2利用效率（CUE）、气孔限制值（Ls）、PSⅡ的潜在活性(Fv/F0)、PSⅡ原初反应的最大量子效率（Fv/Fm ）呈显著正相关；生物量、Pn、LUE、CUE、Fv/F0、Fv/Fm为第一类能够有效评价西伯利亚白刺耐苏打盐碱土能力的指标，Ls、Fm为第二类能够有效评价西伯利亚白刺耐苏打盐碱土能力的指标；评价植物耐盐性指标的有效性会因盐类型的不同而改变。
    Abstract: The growth, gas exchange parameters and chlorophyll fluorescence parameters were investigated in Nitraria sibirica under the soda salinealkaline stress in pots. The results showed that moderate soda salinealkaline contents in soil could stimulate biomass and growth of N. sibirica. At a level of 0.2% soda salinealkaline content in soil, the biomass peaked, 27.3%higher than that of the control. Under high levels of soda salinealkaline stress, the net photosynthetic rate declined, mainly due to nonstomatal limitation factors and partially due to the decrease in leaf water content and chlorophyll content. The increase of intercellular CO2 concentration under high levels of soda salinealkaline stress might result partially from the nonuniform stomatal closure. The content of carotenoid dropped at a low level of soda salinealkaline content in soil but lifted at higher levels, while NPQ showed no significant differences under various levels of soda salinealkaline stress. It is suggested that a high level of NPQ in N. sibirica could be kept by increasing the content of carotenoid. There were significantly positive correlations between biomass and Pn, LUE, CUE, stomatal limitation value (Ls), Fv/F0, Fv/Fm (P0.01). The primary indices that could be used to evaluate the tolerance of N. sibirica to soda salinealkaline stress are biomass, Pn, LUE, CUE, Fv/F0 and Fv/Fm, while the secondary ones include Ls and Fm. The effectiveness of the indices depends on the type of salts in soil.
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出版历程
  • 收稿日期:  1899-12-31
  • 修回日期:  1899-12-31
  • 发布日期:  2011-05-29

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