[Show abstract][Hide abstract] 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 CO<SUB>2</SUB> concentration was not affected by water stress. A weak relationship (R<SUP>2</SUP>= 0.60) between net photosynthesis rate and stomatal conductance suggested that non-stomatal limitations to photosynthesis
[Show abstract][Hide abstract] ABSTRACT: Rice plants grown in nutrient film technique (NFT) to evaluate the effect of intermittent water stress on water relations, transpiration rate and leaf temperature. It was observed that the total water uptake by the plant, leaf relative water content (RWC), leaf water potential and rate of transpiration were decreased with increasing water stress. The transpiration rate was also decreased with increasing water stress but the leaf temperature increased. There was a positive correlation between (R<sup>2</sup>=0.81) leaf temperature and RWC and between leaf temperature and transpiration (R<sup>2</sup>= 0.68).
Preview · Article · May 2003 · Pakistan Journal of Biological Sciences