| 淹水胁迫对浙江种源鹅掌楸光合特征的影响 |
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| 引用本文： | 张晓平,王沁峰,方炎明,张敏. 淹水胁迫对浙江种源鹅掌楸光合特征的影响[J]. 南京林业大学学报(自然科学版), 2007, 31(3): 136-138 |
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| 作者姓名： | 张晓平 王沁峰 方炎明 张敏 |
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| 作者单位： | 安徽师范大学生命科学学院,安徽,芜湖,241000;南京林业大学森林资源与环境学院,江苏,南京,210037;南京林业大学森林资源与环境学院,江苏,南京,210037;江苏省林业科学研究院,江苏,南京,211153 |
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| 基金项目： | 江苏省农业科技攻关项目 , 安徽师范大学校科研和教改项目 |
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| 摘 要： | 不同淹水时间处理下,浙江种源鹅掌楸叶片光合特征的变化为:淹水处理2 h后,鹅掌楸叶片的气孔导度、净光合速率、蒸腾速率略有增加;淹水24 h后,叶片的气孔导度、净光合速率、蒸腾速率则大幅度下降;淹水处理48 h后,3个指标达到最低值,与对照相比,降幅均在80%以上.这表明淹水时间越长,胁迫对鹅掌楸光合作用和蒸腾作用的抑制作用越严重.而胞间CO2浓度变化不同:淹水24 h前下降;淹水48 h后则大幅度增加.相关分析结果表明,净光合速率与气孔导度、蒸腾速率与气孔导度均呈显著正相关关系.
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| 关 键 词： | 鹅掌楸 淹水胁迫 光合特征 |
| 文章编号： | 1000-2006（2007）03-0136-03 |
| 修稿时间： | 2006-01-142006-11-15 |
Effects of Different Water Stress on Photosynthetic Characters of Liriodendron chinense from Zhejiang Province |
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| ZHANG Xiao-ping,WANG Qin-feng,FANG Yan-ming,ZHANG Min. Effects of Different Water Stress on Photosynthetic Characters of Liriodendron chinense from Zhejiang Province[J]. Journal of Nanjing Forestry University(Natural Sciences ), 2007, 31(3): 136-138 |
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| Authors: | ZHANG Xiao-ping WANG Qin-feng FANG Yan-ming ZHANG Min |
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| Affiliation: | 1. School of Life Science, Anhui Normal University, Wuhu 241000, China;2. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China ; 3. Jiangs u Academy of Forest ry, Nanjing 211153, China |
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| Abstract: | The effect on photosynthetic characters of Liriodendron chinense from Zhejiang province under different waterlogging time stress was studied.After 2 h waterlogging treatment,the stomata conductance,the net photosynthetic rate(Pn) and the transpiration rate increased a little,but decreased markedly after 24 h waterlogging treatment,and decreased to the least after 48 h waterlogging treatment.The results showed that the longer the stress time,the more serious the restraint to photosynthesis and the transpiration.But the different results occurred for intercellular CO2 concentration(increased obviously after 48 h waterlogging treatment).The coefficient analysis indicated that,between Pn and the stomata conductance,between the transpiration rate and the stomata conductance,there was an obvious positive correlation. |
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| Keywords: | Liriodendron chinense Waterlogging Photosynthetic character |
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