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In the Eastern Forest-Steppe zone of Ukraine, which is characterized by a sharp change in weather conditions during the growing season of agricultural crops, it is very important to grow hybrids that are most adapted to frequent weather anomalies during the growing season. This can significantly reduce their negative impact on the productivity of spring wheat. The results of a study of 20 samples (soft spring wheat Triticum aestivum L.) and (durum spring wheat Triticum durum) of different ecological and geographical origin for adaptability when changing environmental conditions (Ukraine, Russia, Kazakhstan, Mexico, Sweden) are presented. Adaptability indicators were determined by the following characteristics: mass of one spike, mass of grain from one spike, number of grains from one spike, mass of 1000 seeds, mass of grain from 1 m2. Samples that have high plasticity and stability by these characteristics have been identified. As a result of the conducted studies, the dependence between the main signs of productivity were established: the number of grains from one spike, the mass of grains from one spike, the mass of 1000 seeds, the mass of one spike, the mass of seeds from 1 m2 of Triticum aestium and Triticum durum samples. We have considered the adaptability of selection characteristics of samples by years with different environmental conditions: air temperature, relative humidity, precipitation amount, and hydrothermal coefficient.

The level of adaptability of perspective samples of soft and durum spring wheat in Ukrainian forest-steppe