The purpose of the work is to assess the adaptive parameters of spring filmy oats of the Far Eastern breeding on the basis of the content of lysine in the grain in the conditions of the Middle Amur region. The studies were carried out in 2017–2021 on the experimental field of the Far East Research Institute of Agriculture. The crop rotation soil is brown-podzolic. Plot area 12 m2, 3-fold repetition. Optimal for the formation of high-lysine grain of the analyzed set of oat varieties were characterized by 2017 (Ij=25.1) and 2020 (Ij=21.0), the maximum values of the trait were noted in 2021 (Ij=64.8) in the varieties Tigrovy (422.8 mg/%) and Peredovik (574.2 mg/%). The difference in the average varietal value of the trait, the content of lysine in grain over the years, was 151.2 mg/%. The most stable manifestation of the trait the content of lysine in grains in varieties of spring oats was found in the variety Far East gold (V=12.5 %) and in the standard Marshall (V=14.4 %). The greatest variability of the trait lysine content in grain was noted in the oat variety Peredovik (V=28.5 %). In terms of the range of lysine content in the grain, all varieties were inferior to the standard variety Marshall (d=109.8). The most intense in terms of the degree of trait calculated by the content of lysine in the grain were the oat varieties Far East golden (I=51.7), Cardinal (I=54.8), Premier (I=56.6), Tigrovy (I=59.9). In the conditions of the Middle Amur region, the indicator (St2) indicates the stability of the formation of high-lysine grain in the varieties Peredovik, Far East fodder, Far East golden, Premier, Cardinal, Tigrovy (St2=0.987–0.994). An increased criterion for the stability of the trait, the content of lysine in the grain, was noted in the variety Far East fodder (A=3.6). According to the stability factor (SF), the most stable varieties of oats are Marshal (SF=1.5), Express (SF=1.5), Peredovik (SF=1.6) and Far Eastern fodder (SF=1.6). Based on a set of parameters, the most adapted varieties of spring oats Peredovik, Far East golden, Far East fodder were identified.

Aseeva Tatyana A., Trifuntova Irina B.

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