Photosynthesis of Cotton Leaves Under a Range of Environmental Conditions in Relation to Internal and External Diffusive Resistances

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Abstract
Experiments have been described in which photosynthesis of cotton leaves enclosed in a leaf chamber was measured under various conditions of light intensity (1000-6000f.o., corresponding to 3�8x 104-22�5x 104 erg cm-2 sec-I), CO2 concentration (200-2000 p.p.ro.}, temperature (30-40�C), relative humidity (40-80%), and windBpeed (0�6-3�1 em sec-I). The plants were well watered in order to minimize water stress.