Study of sustainability and assimilation of nitrate by plants under the abiotic stress, as the theoretical basis of grain crops adaptive capacity assessment
The sustainability of Triticum aestivum L. and ×Triticosecale Wittm. to abiotic stress was studied in the greenhouse experiment. The treatment of seeds with selenium, silicon and zinc significantly reduced the lessening of plant productivity under stress conditions. By the isotope indication method the protective role of Se, Si and Zn under conditions of oxidative stress was found to be associated with more fast normalization of nitrogen nutrition processes in plant during the reparation, since the processes of nitrogen uptake after watering resumption restored more faster and the plants used more nitrate-labelled nitrogen for protein synthesis. The studied patterns allow to evaluate the adaptive capacity of crops.