Abstract
Dehydration is characteristic of plants when exposed to a number of stresses: drought, salinity, high and low temperatures, and the defense mechanisms against it are similar when exposed to various stressors. The mechanism of adaptation to salinity in different plants is not the same. But the increased content of chloride and sulfate ions can indirectly release salt-tolerant specimens with a tolerance mechanism that provides the possibility of greater accumulation of salts without harm to the plant. The content of Cl - ions varied in 50 studied rice samples from 7.6 - 55%. In terms of the amount of sulfate ions, the range of variation was also high, from 1, 19% to 46, 51%. The content of nitrate ions varied least of all in the test material (from 0.37% to 15, 22%). 10 samples had a Cl ion content of more than 30%, which allows them to be recommended as sources according to the characteristic, these are the varieties: Privolniy, Vizit, Courage, Rapan, Smuglyanka. Anahit, Olympus. The varieties Privolniy Mars, Gamma, Olympus contained a high concentration of nitrate ions. Sulfate ions accumulated most of all in the following samples: Anahit, Vizit, Orion, Istok, Regulus. The isolated samples can be sources of both adaptability to drought and salinity.
Highlights
Dehydration is characteristic of plants under the influence of a number of stresses: drought, salinity, high and low temperatures, and the defense mechanisms against it are similar under various stressors [1,2,3]
Salt tolerance is based on the mechanisms of salt metabolism and accumulation
Adaptation has a number of varieties from the development of subcellular and biochemical mechanisms of salt tolerance to molecular ones
Summary
Dehydration is characteristic of plants under the influence of a number of stresses: drought, salinity, high and low temperatures, and the defense mechanisms against it are similar under various stressors [1,2,3]. Salt tolerance is based on the mechanisms of salt metabolism and accumulation. Ions penetrate into plants through the root system and accumulate in the cells of both vegetative and generative organs. The concentration of salts in the cell, which does not affect metabolism, differs depending on the type of plants, the adaptability of their cytoplasm and the level of soil salinity [4,5,6]. Adaptation has a number of varieties from the development of subcellular and biochemical mechanisms of salt tolerance to molecular ones. In salt-localizing plants, excess salt is concentrated in individual organs or organelles. Saline release it through the secretory system
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