The studies aimed to identify valuable naked-grain oat genotypes with effective genetic-physiological systems (GPS) of adaptability, attraction and microdistribution of assimilates for their subsequent use as sources in the development of highly productive varieties. The evaluation of 11 genotypes (10 varieties and the kss‑98-329 line) was carried out in 2022–2024 in the south-western part of the Sverdlovsk region at different moisture levels (GTC 0.98; 1.14; 2.06, respectively) using the theory of ecological-genetic organisation of quantitative traits and the orthogonal regression method. The weight of the stem, panicle, grain and chaff from the panicle was measured in 10 plants of each variety in two field replicates. The average value of the productivity trait indicator was plotted on a graph of two-dimensional trait coordinates, and the contribution of the GPS to the yield was identified. According to the orthogonal regression graphs reflecting the work of the HPS of attraction of photosynthetic products from the stem to the panicle, the following varieties stably demonstrated their capabilities: Progress, line kss‑98–329, Sibirsky Golozerny and Levsha, which were assigned to the first and second groups on the orthogonal regression graphs depending on the combination of positive and negative shifts in the genetic systems. The varieties Vyatsky, Sibirsky and Tyumensky Golozerny were characterised by stable positive shifts in the GPS of the genetic system of microdistributions of plastic substances over 3 years of testing. The Levsha, Persheron, Sibirsky Golozerny and kss‑98-329 varieties were distinguished by the highest productivity rates (1.41–1.59 g) and grain content (52–56 pcs.) per panicle, and also formed the largest dry above-ground biomass with a plant weight of 3.95–4.37 g, stem weight of 1.64–1.74 g, panicle weight of 2.27–2.63 g, exceeding other varieties by more than 5.2 %. According to the results of the rank analysis, these genotypes took the first positions with ranks from 7 to 22.
V. E. Kardashina (Wed,) studied this question.