МРНТИ 87.15.19.03                                                                         №3 (2020г.)

Sultangazieva G.S., Akhmetova   S.O.

The article considers the problems of physiological and biochemical changes in barley structure and shows that one of the problems is salinization of
soils and its contamination with heavy metals, particularly with copper ions. The aim of the study was to assess the impact of sodium chloride and copper sulfate on different varieties of barley, their stability based on integrated physiological and biochemical approaches. The study sets forth the results of comparative studies of various Kazakh barley varieties, their protective adaptation reaction in response to the action of salinity and copper (increased activity of antioxidant enzymes, polyamines, and stress inducing amino acids). It was revealed that root growth and biomass accumulation by roots were suppressed to a lesser extent under salinization conditions in comparison with above-ground organs. The obtained data allows using them as integral indicators of plant resistance.
Keywords: barley, soil salinity, biomass, turgor mass, biometric indicators, resistant to stressors.