Abstract
The aim was to study the changes in the physiological and biochemical characteristics in vitro of three potato varieties (Burren, Elmundo, Arizona) It is- under salt stress conditions for the period from June-2022 to October -2022. MS medium supplied with different concentrations of NaCl salt (0, 8, 10, and 12) dc m-1 was used for a month of cultivation. the plant’s content of potassium, sodium, calcium, magnesium, and chlorine increased with increasing salt concentrations. The results also show a significant effect of NaCl salt on biochemical characteristics, as the proline content of the plants increased, the concentration of catalase, H2O2, and SOD enzyme increased with the increase in salt concentrations, as the concentration recorded 12 dc m-1, the highest average of the mentioned characteristics (9.117 ppm and 318.113 mmol min mg-1 and 197.223 ppm and 150.223 unit’s min-1 mg -1) respectively.
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