the physiological and agronomic responces of 25 wheat cultivars to salinity stress were evaluated using a complete block design in two region with saline and non saline soils. the wheat cultivares were one intenational salt toleraqnce wheat, karchia and 24 iranian cultivars of which eight ones are knowen as salt tolerance. the results showed that at anthesis stage there was a positive correlation between ion selectivity in transport from the soil to the leaves and total biomass.