a solution culture experiment was conducted to evaluate the salinity tolerance of 15 tomato genotypes in hoagland’s nutrient solution with three levels of nacl (0, 75, and 150 mm). the experiment was conducted in completely randomized design with three replicates. after 30 days of imposition of salt stress, gas exchange parameters including transpiration rate, stomatal conductance, co2 assimila...

Transport of CO(2) in leaves was investigated by combining a 2-D, microscale CO(2) transport model with photosynthesis kinetics in wheat (Triticum aestivum L.) leaves. The biophysical microscale model for gas exchange featured an accurate geometric representation of the actual 2-D leaf tissue microstructure and accounted for diffusive mass exchange of CO(2.) The resulting gas transport equation...

water use efficiency (wue, the ratio of total dry matter to water use) became a breeding target only when it was found that carbon stable isotopes were inversely related to wue. the current study conducted under well-watered and drought conditions in the field over two years at broom’s barn research station, uk, was undertaken to investigate the extent of genotypic differences for water use, yi...

1. I ntroduction 2. P artitioning of O2 and CO2 Exchange Across the Respiratory Surfaces 2.1. P rimitive Ray‐Finned Fishes (Actinopterygii) 2.2. L obe‐Finned Fishes (Sarcopterygii) 2.3. J awless Fishes (Agnatha) 3. B lood O2 Transport 3.1. G eneral Principles of Hb Function 3.2. F actors AVecting the ArterioVenous O2 DiVerence 3.3. S urvey of Extant Primitive Fishes 4. T ransport and Eliminatio...

Hawaiian dominant tree species Metrosideros polymorpha varieties glaberrima and polymorpha have glabrous and pubescent leaves, respectively. Sympatric populations at 2040 m elevation showed major differentiation beyond the pubescence itself. The varieties differed substantially in stomatal traits and in leaf composition, leaf water status, and instantaneous gas exchange rates, despite similarit...

This study was carried out to determine the consequence of foliar application agmatine (0 and 0.5 mM), on growth, physiological biochemical traits, yield turnip (Brassica rapa L.) plants grown under water stress or salt conditions. The effect three irrigation regimes (100%, 80% 40% field capacity) concentrations (0, 100 200 mM NaCl) in pots greenhouse conditions were studied. Water deficit deve...