| 草莓叶绿素荧光参数日变化的研究 |
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| 引用本文： | 段仁燕,吴甘霖,黄振波.草莓叶绿素荧光参数日变化的研究[J].生物学杂志,2009,26(5):69-70,73. |
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| 作者姓名： | 段仁燕 吴甘霖 黄振波 |
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| 作者单位： | 安庆师范学院生命科学系,安庆,246011 |
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| 基金项目： | 安徽省教育厅基金，安徽省教育厅青年基金 |
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| 摘 要： | 以草莓（Fragaria ananassa Duch）为材料，研究其叶片叶绿素荧光参数的日变化。在自然光下，草莓叶片的最大荧光（Fm）、PSⅡ光化学效率（Fv／Fm）、PSⅡ光量子效率（Yield）和光化学猝灭系数（qP）从6：00-18：00均先下降后上升，其中在下午14：00最低；而非光化学猝灭系数（qN）先上升后下降，其中在下午14：00最高。表明在中午强光下，草莓叶片遭受了强烈的光抑制，而热耗散是其主要的光保护机制。
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| 关 键 词： | 草莓 叶绿素荧光参数 日变化 |
Daily change of chlorophyll fluorescence of Fragaria ananassa Duch |
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| DUAN Ren-yan,WU Gan-lin,HUANG Zhen-bo.Daily change of chlorophyll fluorescence of Fragaria ananassa Duch[J].Journal of Biology,2009,26(5):69-70,73. |
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| Authors: | DUAN Ren-yan WU Gan-lin HUANG Zhen-bo |
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| Institution: | (The Life Science Department, Anqing Teachers College, Anqing 246011, China) |
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| Abstract: | Taking Fragaria ananassa Duch as sample, daily change of chlorophyll fluorescence of F. ananassa by PAM-2100 was studied. The results indicated that in sunny day, daily change of photosynthesis of Fm, Fv/Fm, yield and qP showed V type which decreased at first, then increased and there is the lowest photosynthesis at 14： 00. The non-photochemical quenching rate （qN） increased significantly at first then decreased. It indicated that qN was used mainly to dissipate excess light energy absorbed by PS Ⅱ. |
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| Keywords: | Fragaria ananassa Duch chlorophyll fluorescence parameter daily change |
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