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Position: Home > Articles > Diurnal Variation of Photosynthetic Characteristics in Populus.Russkii and Populus alba×Populus bolleana Northern Horticulture 2010 (17) 104-107

俄罗斯杨和银×新杨光合日变化的研究

作  者:
王彬;李宏;毕刚蕊
单  位:
沈阳农业大学林学院;新疆林业科学院;新疆农业大学林学与园艺学院
关键词:
俄罗斯杨;银×新杨;净光合速率;日变化
摘  要:
利用Li-6400便携式光合作用测定系统对俄罗斯杨和银×新杨叶片的净光合速率、胞间CO2浓度、气孔导度、蒸腾速率、相对湿度、大气CO2浓度、光合有效辐射和叶温等生理生态指标的日变化进行了研究。结果表明:俄罗斯杨和银×新杨叶片的Pn、Cond和Tr的日变化均为典型的"双峰"曲线,最高峰和次高峰分别出现在11:00和16:00,在14:00有明显的"午休"现象,气孔限制因素是导致"午休"的主要原因。相关分析表明,俄罗斯杨和银×新杨叶片的Pn的主要影响因子为PAR、Cond、Tr、RH、Ci和Tleaf。
译  名:
Diurnal Variation of Photosynthetic Characteristics in Populus.Russkii and Populus alba×Populus bolleana
作  者:
WANG Bin1,LI Hong2,BI Gang-rui 3 (1.College of Forestry and Horticulture,Xinjiang Agricultural University,Urumqi,Xinjiang 830000;2.Xijiang Academy of Forestry Sciences,Urumqi,Xinjiang 830000;3.Shenyang agricultural University,School of Forestry,Shenyang,Liaoning 110866)
关键词:
Populus.Russkii.;Populus alba×Populus bolleana;photosynthetic rat;diurnal variation
摘  要:
The diurnal variation of net photosynthetic rate,intercellular CO2concentration,stomotal conductance to H2O,transpiration rate,relative humidity,field,photosynthetically active radiation and leaf temperature of Populus.Russkii and Populus alba×Populus bolleana.Maxim and its eco-physiological factom was investigated using Li-COR 6400portable photosynthesis system.The results showed that the diurnal variation of Pn,Gond and Tr of Populus.Russkii.In sunny day exhibited double-peak pattern,and the peaks occurred at 11:00and 16:00respeetively.There was a significant midday depression with A.sinensis,which was caused principally by stomatal factors such as stomatal conductance.The correlation analysis showed that the dominandy influencing factors of net photosynthetic rate of Populus.Russkiil and Populus alba×Populus bolleana.Maxim were RH,Gond,Tr,Ci and Tleaf.

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