Abstract
The article presents the results of studies on the possibility of using the indicator of the permeability of cell membranes, estimated by the specific electrical conductivity of water infusions of seedling tissues in assessing the stress resistance of wheat varieties. In laboratory vegetation experiments, the smallest changes in the value of the relative index of electrical conductivity and the rate of release of electrolytes in seedlings of resistant varieties of spring wheat were found under the combined action of hyperthermia of seeds (43 °C), chloride salinity (1.3 %) and the causative agent of common rot of cereals Bipolaris sorokiniana Shoem. (5000 conidia per grain). The methodological techniques of conductometric measurements were experimentally determined, which ensure obtaining the maximum intervarietal differences under the combined action of stressors. The proposed approach will make it possible to assess new genotypes for resistance to biotic and abiotic stressors in breeding, crop production and biotechnology, accelerate the selection of breeding material and adjust agricultural technologies.
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