Photosynthetic response and stomatal behaviour of Pinus koraiensis during the fourth year of exposure to elevated CO2 concentration
作者： Y. M. Zhou , S. J. Han
DOI: 10.1007/S11099-005-0071-5
关键词: Photosynthetic capacity 、 Plant physiology 、 Photosynthesis 、 Botany 、 Significant difference 、 Stomatal conductance 、 Co2 concentration 、 Horticulture 、 Pinus koraiensis 、 Chemistry
摘要: 4-year-old Pinus koraiensis, planted in open-top chambers at Changbai Mountain Station, received three different treatments [700 µmol(CO2) mol−1 = EC, control chamber CC, and field F]. Saturated net photosynthetic rate (PN) was 62 % higher EC plants compared to CC F as shown by PAR/PN response curves. Despite the increased PN, still showed decreased capacity when with same measurement CO2 concentration. had highest stomatal conductance (gs) ratio of intercellular ambient concentration \((C_{\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{i} } /C_a )\) measured The Ci/Ca a sensitive indicator behaviour, but not photosynthesis. responses gs did correlate magnitude or direction PN EC. There no significant difference number stomata lines between Ca.
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