Changes on Some Characteristics of Tomato Genotypes in Different Tolerance Levels for Salt Stress under Drought Stress Conditions

This study was carried out to determine drought tolerance levels of tomato genotypes (tr-68516, rio grande, tr-63233, h-2274) of which salt tolerances were determined before by examining changes in some of the morphological and physiological characteristics, to find the information whether there is a parallel direction between salt tolerance and drought tolerance. for this aim, plants were investigated in terms of characteristics such as plant fresh and dry weight, leaf area, relative humidity, stomatal conductance and leaf water potential. in this study, when % 40 of total available water for s0 application (control) and %90 of available water for s1 application were consumed, plants were irrigated. in s2 application, after the 3-4 leaf stage the plants were deprived of water. tomato genotypes (tr-68516, rio grande) with high resistance to salt have performed well under drought stress, too. this visual scale of these genotypes gave values close to their control plants. tomato genotypes with low salt tolerance (tr-63233, h-2274) were also affected by a high level of drought stress. they left behind in terms of plant fresh and dry weight, leaf area, relative humidity, stomatal conductance, leaf water potential and chlorophyll content than the tolerant genotypes. in the light of the parameters investigated it has beendetermined overall that salt tolerant genotypes showed resistance to drought better than susceptible ones.