A new adaptive winter rye variety Batist

To increase the productivity and quality of winter rye grain, it is necessary to create new varieties that are adaptive to various environmental stress factors and meet the requirements of the north-eastern region of the European part of the Russian Federation. The purpose of the research is to create a variety of winter rye with high adaptive capacity, resistance to soil and climatic stresses, forming a consistently high yield. Breeding work on the creation of a new variety Batist was carried out in 2004–2020 at the Falensky Breeding Station. The study was conducted in comparison with the Falenskaya 4 standard on the soil backgrounds of sod-podzolic soil: an ordinary and a natural hard, provocative background in terms of acidity. Agrochemical parameters of the soil were as follows: the usual background of рН_KCl was 5,0–5,2 units, mobile ion content of Al³⁺ ions was 5,0–6,5 mg/100 g of the soil, and the natural background provocative in terms of alumina acid content of рН_KCl was 3,7–3,9 units, while the mobile ion content of Al³⁺ ions was 26,5–28,4 mg/100 g of the soil. The variety of winter rye Batist with a dominant type of short stem was created by the method of multiple biotypic selections from the varieties Era and Volkhova. On average for 2016–2020, in a competitive variety trial on a conventional soil background, the yield of the Batist variety was 5,35 t/ha (+0,75 t/ha to the standard), on a provocative soil acidity background, the average yield of the new variety was 3,46 t/ha (+0,80 t/ha to the standard). The Batist variety is characterized by high winter hardiness (4.7 points) and regenerative ability after snow mold damage (86%). According to baking indicators, it belongs to the 1st and 2nd quality classes, depending on the conditions of the year (falling-number – 168–225 s). A comparative assessment of the adaptive yield potential of the Batist variety was carried out, which showed a low response to stress factors, high stability of the variety in various environmental conditions. According to the results of the State Variety Trial (2021–2022) in 2023, the Batist variety was included in the State Register of Breeding Achievements of the Russian Federation, with admission to the Volga-Vyatka and Northern regions.

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