| 女贞秋季光合特性研究 |
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| 引用本文： | 尤扬,张晓云,王贤荣,方春霞.女贞秋季光合特性研究[J].资源开发与保护,2014(2):129-132,194. |
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| 作者姓名： | 尤扬 张晓云 王贤荣 方春霞 |
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| 作者单位： | [1]河南科技学院园艺园林学院,河南新乡453003 [2]南京林业大学森林资源与环境学院,江苏南京210037 |
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| 基金项目： | 河南教育厅科学技术研究重点项目（编号：12B180008）;河南教育厅科学技术研究重点项目（编号：13A180307）. |
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| 摘 要： | 采用Li-6400型便携式光合作用测定系统测定了女贞的光合特性.结果表明,女贞叶片净光合速率日变化呈双峰曲线,存在光合“午休”现象;最高峰出现在10：00时左右,次高峰出现在13：00时,日最大净光合速率为10.8umol/m2·s.植物的净光合速率（Pn）与气孔导度（Cond）及蒸腾速率（Tr）呈正相关,而与胞间CO2浓度（Ci）呈负相关.女贞的光补偿点为为8.806umol/m2·s,光饱和点为1499μmol/m2·s,是具有一定耐荫能力的植物.
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| 关 键 词： | 女贞 光合速率 光饱和点 光补偿点 |
Photosynthetic Characteristics of Ligustrum lucidum Alt.in Autumn |
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| Authors: | YOU Yang ZHANG Xiao-yun WANG Xian-rong FANG Chun-xia |
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| Institution: | 1. School of Horticulture Landscpe Architecture, Henan Institute of Science and Technlogy, Xinxiang 453003, China; 2. College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China) |
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| Abstract: | The photosynthetic characteristics of Ligustrum lucidum Alt. were studied with the use of Li - 6400 portable photosynthesis assessment system. The results showed that the curve of the diurnal variation of Ligustrum lucidum Ah. Pn was a bimodal curve and there was a clear depression at noon. The first peak occurred at 10：00 am, the secondary maximum occurred at 13：00 pm. The maximum diurnal net photosynthetic rate was 10.8 /xmol/m2 ·s. The analysis also showed that there were a positive relationship between photosynthetic rate and transpiration rate and stomatal conductance ,there was a negative relationship between photosynthetic rate and internal CO2 concentration .Light compensation point was 8.806kanol/m2·s, light saturation point were 1499txmol/m2·s. The light compensation and saturation point indicated that Ligustrum lucidum Alt, was a mild shade - resistant plant. |
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| Keywords: | Ligustrum lucidum Ah photosynthetic rate light saturation point light compensation point |
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