To create new salt-tolerant varieties of wheat and maize, a comparative analysis of the physiological parameters of the parental and hybrid plants was carried out. Physiological parameters such as chlorophyll content, relative water content, and PSII activity have been studied in parental forms and hybrids. Based on the physiological indices determined during the grain filling stage, the highest tolerance was manifested by the parental forms, Garabagh, Gobustan, and the hybrids, Garabagh x Gobustan, Garabagh x Mirbashir, Garabagh x Sharg. Maize varieties Gurur, Zagatala- 68 and hybrid “Gurur x Zagatala -68” were resistant to 200 mmol salt concentration.