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Abstract

Two wheat cultivars.one 0f which known as salt resistant were evaluated in a pot experiment, regarding their responses to salinity of water potential,ionic status, some growth parameters , and yield components.using a split plot design with 3 replications, three salinity treatments were solutions containing 0,2.5 and 5 gr.NaC1 per liter of water used for watering, starting 4 weeks after sowing. Significant effects of salinity were observed reducing the number of ear-hearing tillers and RGR.but not in NAR. It wad also observed that the flag leaf water

potential dereased and its Na and K contents were increased. It was concluded that the reductions in growth parameters and yield components are not due to the limitations made on the rate of carbon uptake under saline conditions. These reductions are more consistent with the ionic status of the plants in the form of leaf total potassium and sodium eontent,being lower

with low leaf (K+ +Na+) content of salt resistant cultivar.