Adaptability of a new winter wheat variety Priirtyshskaya 3

The purpose of the study is to assess the adaptive capabilities of a new winter wheat variety Priirtyshskaya 3 in terms of yield and winter hardiness. The experiments were carried out in 2017-2022 on the fields of the Omsk Agricultural Research Center. The object of the study is the numbers of winter soft wheat from the competitive variety testing of the winter crops breeding laboratory. The calculation of adaptability indicators (plasticity and stability) was carried out according to the S.A. Eberhart, W.A. Russell (1966). The highest yield (5.42 t/ha) during the research period was shown by the variety Priirtyshskaya 3. This variety was plastic both in terms of productivity (bi = 0.96) and winter hardiness (bi = 1.01). In terms of yield stability (ϭ2d = 0.12) and winter hardiness (ϭ2d = 8.69), the Priirtyshskaya 3 variety is in the group of the best samples. The new variety with winter hardiness at the level of 80 % is more productive than samples with winter hardiness of 81-85 %. In terms of grain quality (weight of 1000 grains, vitreousness, protein and gluten content in the grain), the Priirtyshskaya 3 variety is close to the standard Omskaya 4 variety. The Priirtyshskaya 3 variety was obtained by individual selection from the combination of crossing Mironovskaya 25 × Ilyichevka mutant. The new variety shows resistance to shedding and lodging. Under field conditions, brown rust damage in the Priirtyshskaya 3 variety was noted at the level of the standard. The duration of the growing season of the new variety is 330 days. The variety Priirtyshskaya 3 was submitted for the State variety testing in 2022 and is recommended for use in the southern forest-steppe of the West Siberian and East Siberian regions.