Abstract
Salinity is one of the abiotic stresses that affect potato growth and productivity in mostly semi-arid and growing areas, causing an imbalance in the physiological processes of plants. The accumulation of Na+ and Cl- ions in cells is extremely toxic and can affect all of the plant mechanisms and enzymatic actions. . In vitro osmotic stress screening of plant genotypes is a useful tool that can be used instead of field trials and is based on osmotic stress tolerance. The major purpose of this work was to employ in vitro screening to reveal the variation in potato cultivars' salt stress tolerance Murashige and Skoog (MS) media supplemented with varied quantities of sodium chloride NaCl was used to culture stem cuttings consisting of a single node of various kinds ( 10 , 30 , 50,70,100 and 120 mM NaCl). Significant differences among treatments were noticed the highest concentration of NaCl gave the lowest values for most the study characters and there were significant differences among cultivars for the response of NaCl concentrations. Low concentrations of NaCl gave values close to the control treatment.
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