Abstract
The article presents the results of studies of adaptive reactions of 10-day-old seedlings of wheat varieties Novosibirskaya 18, Novosibirskaya 44, Sibirskaya 21 and Omskaya 18 under combined stress. It was found that the preliminary hyperthermia of the seeds increased the resistance of seedlings by the type of cross-adaptation to the subsequent action of B. sorokiniana (decrease in EC to 71,9 %, DI to 29,7 %, inhibition of biomass accumulation and growth to 95,4 %). The varietal specificity of the formation of adaptive reactions under the combined action of stressors was revealed. The protective effect of hyperthermia is most pronounced in the varieties Novosibirskaya 18 and Omskaya 18.
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