| NaCl胁迫对喜树幼苗生长和光合特性的影响 |
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| 引用本文： | 郝峰鸽,周凯,杨立峰,张学全.NaCl胁迫对喜树幼苗生长和光合特性的影响[J].福建林学院学报,2009,29(3). |
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| 作者姓名： | 郝峰鸽 周凯 杨立峰 张学全 |
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| 作者单位： | 河南科技学院园林学院,河南,新乡,453003 |
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| 基金项目： | 河南科技学院博士启动基金资助项目 |
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| 摘 要： | 以1年生喜树幼苗为材料,研究在不同NaCl浓度胁迫下喜树幼苗的生长和光合特性。结果表明,随着NaCl浓度的升高,幼苗植株的相对生长量明显降低,盐害指数升高,叶片细胞膜相对透性显著增加;NaCl浓度≤0.30%时,幼苗叶片叶绿素a、叶绿素b含量比对照均有不同程度的增加,而在NaCl浓度≥0.45%时与对照无差异;净光合速率、蒸腾速率、气孔导度、胞间CO2浓度均降低,而气孔限制因素是盐胁迫导致喜树幼苗光合作用下降的主要原因。
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| 关 键 词： | 喜树 NaCl胁迫 光合特性 |
Effects of NaCl stress on seedlings growth and photosynthesis characteristics of Camptotheca acuminata |
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| HAO Feng-ge,ZHOU Kai,YANG Li-feng,ZHANG Xue-quan.Effects of NaCl stress on seedlings growth and photosynthesis characteristics of Camptotheca acuminata[J].Journal of Fujian College of Forestry,2009,29(3). |
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| Authors: | HAO Feng-ge ZHOU Kai YANG Li-feng ZHANG Xue-quan |
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| Institution: | HAO Feng-ge,ZHOU Kai,YANG Li-feng,ZHANG Xue-quan(School of Horticulture and Landscape Architecture,Henan Institute of Science and Technology,Xinxiang,Henan 453003,China) |
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| Abstract: | Effects of NaCl stress with the different concentrations on photosynthesis characteristics and the growth of 1-year-old Camptotheca acuminata seedlings were studied.The results showed that the relative growth increments of seedlings decreased obviously with the increase of salt concentrations,while the salt injury index and the relative membrane permeability increased significantly.The contents of chlorophyll a(ch.l a) and chlorophyll b(ch.l b) in leaves of C.acuminata seedlings increased in comparison with... |
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| Keywords: | Camptotheca acuminata NaCl stress photosynthesis characteristics |
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