Effects of CO2 Enrichment on Four Poplar Clones. II. Leaf Surface Properties |
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Authors: | RADOGLOU, K. M. JARVIS, P. G. |
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Affiliation: | Forest Research Institute of Thessaloniki Vassilika Thessaloniki 57006, Greece * Department of Forestry and Natural Resources, University of Edinburgh Mayfield Road, Edinburgh EH9 3JU, UK |
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Abstract: | The poplar clones Columbia River, Beaupre, Robusta and Raspaljehave been investigated in the present (350 µmol mol1)and double the present (700 µmol mol1) atmosphericCO2 concentration. Cuttings were planted in pots and were grownin open-top chambers inside a glasshouse for 92 d. Stomatal density, stomatal index, length of stomatal pore andepidermal cell density were not affected by CO2 enrichment inany of the clones. Lack of differences in stomatal density orindex indicate that there were no direct effects of CO2 enrichmenton the initiation of the number of stomata during ontogenesisor on epidermal cell expansion at a later stage. Stomatal conductance decreased because of the effect of CO2on stomatal opening. The average reduction in both adaxial andabaxial surface has been estimated at 41%. Beaupre showed thelargest response of stomatal conductance and Columbia Riverthe smallest. Poplar clones, CO2 enrichment, stomatal density, stomatal length, stomatal conductance |
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