| 水稻剑叶生长过程中光合电子流传递分配及其与光合作用的关系 |
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| 引用本文： | 阳成伟,彭长连,段俊,陈贻竹.水稻剑叶生长过程中光合电子流传递分配及其与光合作用的关系[J].植物学报,2002,19(3):322-327. |
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| 作者姓名： | 阳成伟 彭长连 段俊 陈贻竹 |
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| 作者单位： | (中国科学院华南植物研究所 广州 510650) |
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| 基金项目： | ,国家重点基础研究发展计划(973计划), |
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| 摘 要： | 以气体交换和叶绿素荧光测定相结合的方法研究了水稻剑叶生长过程中光合电子传递分配以及与光合速率和叶绿素含量之间的关系 。两种高产水稻品种‘培矮64S/E32’和‘特三矮2号’的剑叶总的光合电子流JF和净光合速率Pn在移栽后50～70 d较高而相对稳定，在80 d后急剧下降。参与碳还原的非环式光合电子流Jc的降低比JF和Pn早。JF与Jc和光合速率与叶绿素含量之间存在正相关性。非环式光合电子传递分配于光呼吸的电子流的比例Jo/JF在50～70 d和80 d后约有35%～50%的电子流分配到光呼吸。
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| 关 键 词： | 水稻 光合电子传递 光呼吸 光合作用 |
| 收稿时间： | 2001-06-05 |
| 修稿时间： | 2001-08-26 |
Photosynthetic Electron Transport and Allocation during the Growth of Flag Leaves of Rice and Their Relationship with Photosynthesis |
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| YANG Cheng-Wei PENG Chang-Lian DUAN Jun CHEN Yi-Zhu.Photosynthetic Electron Transport and Allocation during the Growth of Flag Leaves of Rice and Their Relationship with Photosynthesis[J].Bulletin of Botany,2002,19(3):322-327. |
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| Authors: | YANG Cheng-Wei PENG Chang-Lian DUAN Jun CHEN Yi-Zhu |
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| Institution: | （South China Institute of Botany, The Chinese Academy of Sciences, Guangzhou 510650) |
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| Abstract: | Photosynthetic electron transport and allocation and their relationship with photosynthesis and the chlorophyll content in flag reaves of rice were studied, using the combination of gas exchange and chlorophyll fluorescence measurements. Total photosynthetic e
lectron transport flow rate (JF) and net photosynthetic rate (Pn) were relatively high and stable in two high yield cultivars of rice (`Peiai 64S/E32' and `Tesanai 2') in 50～60 days after transplanting and rapidly decreased after 80 days. The partitioning of noncyclic photosynthetic electron transport to carbon fixtation (Jc) decreased earlier than JF and Pn. There exsisted a positive correlation between JF or Jc and Pn or chlorophyll content, and a partitioning fraction to photorespiration(Jo/JF) was about 35%～50% in 50～70 days and after 80 days. |
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| Keywords: | , |
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