Stomatal sensitivity to air humidity : a hypothesis for its control through peristomatal evaporation
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El-Sharkawy, Mabrouk A.; Cock, James H. 1984. Stomatal sensitivity to air humidity : A hypothesis for its control through peristomatal evaporation. Centro Internacional de Agricultura Tropical (CIAT), Cali, CO. 8 p.
Permanent link to this item: http://hdl.handle.net/10568/71408
Analysis of previously published data shows that an extremely close correlation (r(2) = 0.83) exists between stomatal sensitivity to changes in leaf to air vapor pressure deficit and the maximum leaf conductance at low VPD in a wide range of plant species. The hypothesis is presented that stomatal sensitivity to changes in VPD is related to the evaporative area of the stomatal apparatus coupled with a large hydraulic resistance between the epidermal cells and the bulk of the leaf