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Pakistan Journal of Biological Sciences

Year: 2004  |  Volume: 7  |  Issue: 4  |  Page No.: 563 - 565

Effect of Drought Stress on Photosynthesis and Leaf Gas Exchange of Rice Grown in Nutrient Film Technique (NFT)

K.P. Halder and S.W. Burrage

Abstract

Rice plants grown in nutrient film technique (NFT) to evaluate the effect of intermittent water stress on net photosynthesis rate and leaf gas exchange. Stomatal conductance, net photosynthesis rate and mesophyll conductance decreased with increasing water stress. Internal CO2 concentration was not affected by water stress. A weak relationship (R2= 0.60) between net photosynthesis rate and stomatal conductance suggested that non-stomatal limitations to photosynthesis

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