| 鹅掌柴叶片秋季光合特性 |
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| 引用本文： | 尤扬,周建,贾文庆,郝峰鸽,杨小振.鹅掌柴叶片秋季光合特性[J].东北林业大学学报,2009,37(9). |
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| 作者姓名： | 尤扬 周建 贾文庆 郝峰鸽 杨小振 |
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| 作者单位： | 河南科技学院,新乡,453003 |
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| 基金项目： | 河南科技学院重点科研基金资助项目 |
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| 摘 要： | 采用LI-6400型便携式光合测定系统对鹅掌柴(Schefflera octophylla (Lour.) Harms)叶片秋季光合特性进行了研究.结果表明:鹅掌柴净光合速率日变化呈双峰曲线,最高峰出现在11:00左右,次峰出现在15:00,存在光合"午休"现象.鹅掌柴日最大净光合速率为3.915μmol·m-2·s-1,光补偿点为10.773μmol·m-2·s-1,光饱和点为338.618μmol·m-2·s-1.其光饱和点和光补偿点均较低,表明它是一种较耐荫的植物.
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| 关 键 词： | 鹅掌柴(Schefflera octophylla) 光合速率 光饱和点 光补偿点 |
Photosynthetic Characteristics of Schefflera octophylla Leaves in Autumn |
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| You Yang,Zhou Jian,Jia Wenqing,Hao Fengge,Yang Xiaozhen.Photosynthetic Characteristics of Schefflera octophylla Leaves in Autumn[J].Journal of Northeast Forestry University,2009,37(9). |
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| Authors: | You Yang Zhou Jian Jia Wenqing Hao Fengge Yang Xiaozhen |
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| Institution: | You Yang,Zhou Jian,Jia Wenqing,Hao Fengge,Yang Xiaozhen(School of L,scape Architecture,Henan Institute of Science , Technology,Xinxiang 453003,P.R.China) |
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| Abstract: | An experiment was conducted to study the photosynthetic characteristics of Schefflera octophylla(Lour.)Harms leaves in autumn by the LI-6400 portable photosynthesis system.Results showed that the diurnal change of net photosynthetic rate of S.octophylla could be expressed as a double-peak curve,and its first peak occurred at 11:00 AM and the second one at 15:00 PM,exhibiting a clear midday depression.The maximum values of photosynthetic rate,light compensation point,and light saturation point were 3.915,10.... |
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| Keywords: | Schefflera octophylla Photosynthetic rates Light saturation point Light compensation point |
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