A model to simulate response of plant stomata to environmental conditions |
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| Authors: | Roni Avissar Patricia Avissar Ytzhaq Mahrer Ben Ami Bravdo |
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| Institution: | 1. The Seagram Centre for Soil and Water Sciences, The Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot 76100 Israel;2. The Department of Horticulture, The Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot 76100 Israel |
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| Abstract: | In order to simulate plant transpiration under different field climatic conditions we have developed and verified a semi-empirical model for predicting the stomatal response to solar global radiation, leaf temperature, vapour pressure difference between the leaf and ambient air, ambient air CO2 concentration and soil water potential. The transpiration and the stomatal relative conductance of a Nicotania Tabaccum var “samsun” plant leaves were measured in a laboratory apparatus and compared to those predicted by the model: good agreement was obtained between them for the different investigated cases. The model was incorporated in a numerical greenhouse microclimate model and its effects on the canopy microclimate are discussed here. |
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