| 水分胁迫下细子龙的生长及光合特征研究 |
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| 引用本文： | 莫雅芳,吕曼芳,秦武明,邱鹏光,吴方成.水分胁迫下细子龙的生长及光合特征研究[J].西北林学院学报,2014,29(1):21-24. |
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| 作者姓名： | 莫雅芳 吕曼芳 秦武明 邱鹏光 吴方成 |
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| 作者单位： | 1.广西国有高峰林场,广西 南宁 530002; 2.广西国有维都林场,广西 来宾 546100; 3.广西大学 林学院,广西 南宁 530005 |
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| 摘 要： | 对细子龙(Amesiodendron chinense)在不同水分梯度胁迫下的生长及光合生理特征进行研究。结果表明:细子龙的地径、苗高相对生长率、叶片相对含水量随着土壤水分减少而减少,差异达到显著水平; 20%水分处理的叶绿素含量最低,与其他处理差异显著; 光合速率Pn、蒸腾速率Tr、气孔导度Gs、水分利用率WUE随着土壤水分的减少而降低,细胞间CO2浓度随着土壤水分的减少而增加; 水分胁迫引起细子龙光合速率下降是非气孔限制因素的影响。
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| 关 键 词： | 细子龙 水分胁迫 生长率 光合特征 |
Growth and Photosynthetic Characteristics of Amesiodendron chinense under Water Stress |
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| MO Ya-fang,LYU Man-fang,QIN Wu-ming,QIU Peng-guang,WU Fang-cheng.Growth and Photosynthetic Characteristics of Amesiodendron chinense under Water Stress[J].Journal of Northwest Forestry University,2014,29(1):21-24. |
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| Authors: | MO Ya-fang LYU Man-fang QIN Wu-ming QIU Peng-guang WU Fang-cheng |
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| Institution: | 1. Gaofeng Forest Farm of Guangxi,Nanning, Guangxi 530002, China; 2. Weidu Forest Farm of Guangxi, Laibin, Guangxi 546100, China; 3. Forestry College of Guangxi University,Nanning, Guangxi 530005, China |
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| Abstract: | Growth and photosynthetic characteristics of Amesiodendron chinense under different levels of water stress were examined.The relative growth of diameter and height,relative water content of leaf decreased with the decrease of soil water.The differences were significant.The chlorophyll content was the lowest at 20% water treatment,and different with others.With the reduction of soil water,the photosynthetic rate,transpiration rate,stomatal conductance and water use efficiency all decreased.Intercellular CO2 concentration decreased with the increase of soil water.The falling of photosynthetic rate was affected by non-stomatal limitation factors. |
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| Keywords: | Amesiodendron chinenseAmesiodendron chinense water stress growth rate photosynthetic characteristic |
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