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The Minimum Intercellular-space CO 2 -Concentration (Γ) of Maize Leaves and its Influence on Stomatal Movements

HANS MEIDNER
Journal of Experimental Botany
Vol. 13, No. 38 (May 1962), pp. 284-293
Published by: Oxford University Press
Stable URL: http://www.jstor.org/stable/23686739
Page Count: 10
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The Minimum Intercellular-space CO
          2
          -Concentration (Γ) of Maize Leaves and its Influence on Stomatal Movements
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Abstract

Unlike other leaves investigated, maize leaves were found to be able to exhaust atmospheric CO2-content to zero concentration. This occurred at 20° C. with a light intensity of 100 f.c. and at 30° C. with a light intensity of 500 f.c. The influences of temperature, light intensity, and waterstrain on this property of maize leaves were investigated systematically and a permanent after-effect of waterstrain on the leaves was found. Stomatal conductance measurements showed that maize stomata are sensitive to CO2-concentrations between zero and 100 p.p.m., a circumstance not yet reported for other leaves.

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