| 土壤含水量对阿月浑子叶片净光合速率及叶绿素荧光参数的影响 |
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| 引用本文： | 路丙社,白志英,孙浩元,李会平,刘忠华,董源. 土壤含水量对阿月浑子叶片净光合速率及叶绿素荧光参数的影响[J]. 园艺学报, 2004, 34(6): 727-731 |
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| 作者姓名： | 路丙社 白志英 孙浩元 李会平 刘忠华 董源 |
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| 作者单位： | ( 河北农业大学园林与旅游学院, 保定071000 ; 北京市农林科学院林业果树研究所, 北京100093 ; 河北农业大学林学院, 保定071000 ; 4 北京林业大学生物学院, 北京100083) |
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| 基金项目： | 河北省科技攻关项目(0222D210D)，河北农业大学博士基金项目 |
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| 摘 要： | 研究了土壤相对含水量对阿月浑子叶片叶绿素含量、净光合速率(Pn) 和荧光参数的影响。结果表明: 干旱胁迫降低了阿月浑子叶片Chl1a、Chl1b 含量和Pn , 增加了类胡萝卜素含量; 20 %供水处理降低了阿月浑子叶片的PS Ⅱ活性, 原初光能转化效率(Fv/ Fm) , 光化学猝灭系数(qP) , 非光化学猝灭系数(qN) 和PS Ⅱ电子传递量子产量(ΦPS Ⅱ) 。轻度干旱胁迫下, 气孔限制是Pn 降低的主要原因; 严重干旱胁迫下, 非气孔限制是Pn 降低的主要原因。干旱胁迫下阿月浑子叶片Pn 的下降是水分胁迫和强光胁迫双重作用的结果, PS Ⅱ电子传递量子产量(ΦPS Ⅱ) 降低是阿月浑子叶片Pn 下降的内在原因。
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| 关 键 词： | 阿月浑子 土壤相对含水量 叶绿素荧光 光合作用 |
| 文章编号： | 0513-353X(2004)06-0727-05 |
| 收稿时间： | 2003-12-27 |
| 修稿时间： | 2004-05-24 |
Effects of Soil Water Content Level on Net Photosynthetic Rate and Chlorophyll Fluorescence Parameters in Pistachio Leaves |
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| Lu Bingshe ,Bai Zhiying ,Sun Haoyuan ,Li Huiping ,Liu Zhonghua ,and Dong Yuan. Effects of Soil Water Content Level on Net Photosynthetic Rate and Chlorophyll Fluorescence Parameters in Pistachio Leaves[J]. Acta Horticulturae Sinica, 2004, 34(6): 727-731 |
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| Authors: | Lu Bingshe Bai Zhiying Sun Haoyuan Li Huiping Liu Zhonghua and Dong Yuan |
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| Affiliation: | (College of Landscape Architecture and Tourism , Hebei Agricultural University , Baoding 071000 , China ; Institute of Forestry and Pomology , Beijing Academy of Agriculture and Forestry Sciences , Beijing 100093 , China ; 3 Forest College , Hebei Agricultural University , Baoding 071000 , China ; 4 Biological College , Beijing Forestry University , Beijing 100083 , China) |
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| Abstract: | Effects of relative soil water content on the changes of chlorophyll content , photosynthesis and the parameters of chlorophyll fluorescence in pistachio ( Pistacia vera L. ) leaves were investigated. The results were as follows : the content of Chl1a and Chl1b and the net photosynthetic rate in pistachio leaves were decreased while the content of carotenoid were enhanced by drought stress. The activity of PS Ⅱand the parameter of chlorophyll fluorescence in pistachio leaves such as conversion efficiency of primary light energy ( Fv/ Fm) of PS Ⅱ, the photochemical quenching coefficient (qP) , the Non2photochemical quenching coefficient (qN) and the quantum yield of PS Ⅱelectron transport (ΦPS Ⅱ) were decreased respectively when the relative soil water content is 20 %. The reasons of Pn decreased were stomatal and nonstomatal limitation respectively in light and severe drought stress condition. Under drought stress , It is a primary reason of net photosynthetic rate decreasing in pistachio leaves that the the quantum yield of PS Ⅱelectron transport (ΦPS Ⅱ) were reduced by soil drought and high irradiance. |
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| Keywords: | Pistachio Relative soil water content Chlorophyll fluorescence Photosynthesis |
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