Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10939254 | Flora - Morphology, Distribution, Functional Ecology of Plants | 2005 | 9 Pages |
Abstract
CO2 compensation points were reached at 75-84 μmol molâ1 CO2. Gas exchange of Ginkgo saplings reacted more intensively upon CO2 than those of the adult Ginkgo. On an average, stomatal conductance decreased by â¼30% as CO2 concentration increased from 30 to 1000 μmol molâ1 CO2. Water use efficiency of net photosynthesis was positively correlated with CO2 concentration levels. Saturation of net photosynthesis and lowest level of stomatal conductance was reached by the leaves of Ginkgo saplings at >1000 μmol molâ1 CO2. Acclimation of leaf net CO2 assimilation to the elevated CO2 concentration at growth occurred after 2 years of exposure. Maximum of net CO2 assimilation was 56% higher at ambient air CO2 concentration than at 700 μmol molâ1 CO2.
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Authors
Dieter Overdieck, Jörn Strassemeyer,