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| 干旱胁迫对地被菊光合生理特性及水分利用率的影响 | |
| 引用本文： | 时丽冉,王玉平,刘国荣,李明哲.干旱胁迫对地被菊光合生理特性及水分利用率的影响[J].河南农业科学,2011,40(3):119-121. |
| 作者姓名： | 时丽冉 王玉平 刘国荣 李明哲 |
| 作者单位： | 1. 衡水学院,生命科学系,河北,衡水,053000 2. 西南大学,生命科学学院,重庆,400715 3. 河北省农林科学院,旱作农业研究所,河北,衡水,053000 |
| 基金项目： | 衡水市科学技术研究与发展计划项目 |
| 摘 要： | 为研究地被菊的抗旱能力,采用盆栽控水法进行干旱处理,研究不同程度干旱胁迫对地被菊光合生理特性及水分利用率的影响.结果表明,随着胁迫程度的加深,地被菊净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)呈下降趋势,轻度干旱胁迫下净光合速率与对照差异不显著.而胞间CO2浓度(Ci)在轻度干旱条件下下降,重度干旱胁迫下提高... |
| 关 键 词： | 地被菊 干旱胁迫 光合性能 水分利用率 |
Effect of Drought Stress on the Photosynthetic Properties and Water Use Efficiency of Ground-cover Chrysanthemum |
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| SHI Li-ran,WANG Yu-ping,LIU Guo-rong,LI Ming-zhe.Effect of Drought Stress on the Photosynthetic Properties and Water Use Efficiency of Ground-cover Chrysanthemum[J].Journal of Henan Agricultural Sciences,2011,40(3):119-121. | |
| Authors: | SHI Li-ran WANG Yu-ping LIU Guo-rong LI Ming-zhe |
| Institution: | 1.Department of Life Science,Hengshui University,Hengshui 053000,China;2.College of Life Sciences,Southwest University,Chongqing 400715,China;3.Dry Land Farming Institute,Hebei Academy of Agriculture and Forestry Sciences,Hengshui 053000,China) |
| Abstract: | The photosynthetic properties and water use efficiency were measured under drought stress with pot culture experiments to study the drought resistance of ground-cover chrysanthemum.The results showed that net photosynthetic rate,transpiration rate and stomatal conductance all decreased with the increasing of drought stress,net photosynthetic rate had no obvious difference between light drought stress and the control.The intercellular CO2 concentration decreased under light drought stress,but increased by 30.6% with heavy drought.The water use efficiency increased with drought stress.The water use efficiency under moderate drought stress was 1.34 times compared with the control.The chlorophyll content increased by 6.2% compared with the control under lightly stress,but declined compared with the control under moderate and heavy drought stress.So,Ground-cover chrysanthemum had some adaptability to drought stress. |
| Keywords: | Ground-cover chrysanthemum Drought stress Photosynthetic properties Water use efficiency |
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