Seven biotypes of spring soft wheat variety Tyumenskaya yubileinaya identified by gliadin electrophoresis were studied. The aim of the work was to evaluate their productivity and grain quality for subsequent use in primary seed production. Field experiments were conducted in 2023 at the experimental field of the Northern Trans-Ural State Agricultural University, located in the forest-steppe zone of the Tyumen region. The soil of the plot was leached chernozem. The meteorological conditions of the year were characterized as moderately arid. It was found that all studied biotypes belong to the mid-ripening group with a growing season duration of 87 days. Significant differentiation of biotypes in productivity and quality was revealed. The highest yield was formed by biotypes 4 (2.90 t/ha) and 5 (2.86 t/ha). The maximum 1,000-grain weight was observed in biotypes 3 (38.03 g) and 4 (37.34 g). In terms of protein and gluten content, biotypes 1 (18.37% and 41.35%) and 2 (18.17% and 41.09%) stood out, meeting the requirements for strong wheat. An inverse relationship between yield and grain quality was shown in the studied biotypes. The results confirm the need to maintain the biotype composition to preserve the genetic structure and stability of economically valuable traits of the variety. The selected biotypes are recommended for further use in the breeding process and primary seed production.

Kazak Anastasia A., Rakitina Ulyana A., Tobolova Galina V., Yashchenko Sergey N.

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