M.N. Fomina
Research Agricultural Institute of the Northern Trans-Ural, ul. Burlaki, 2, pos. Moskovskii, Tyumenskii r-n, Tyumenskaya obl., 625501, Russian Federation
Summary. The productivity of promising varieties of scarious oat, developed in the zone of the Northern Trans-Urals, is estimated. Studies showed its considerable variation depending on the growing conditions. The influence of the environment (year) was 52.3 %. The share of genetic variation (variety) was 20.3 %, of the interaction between the genotype and the environment – 11.2 %. The sufficient supply with heat during the growing season had a positive effect on the productivity of most varieties, but the intense accumulation of the sum of effective temperatures in the first half of the growing season (May - June) negatively influenced the productivity. High values of the hydrothermal coefficient during the period from May to August did not provide higher yields (r = -0.60); the positive correlation between grain yield of the studied varieties and an average hydrothermal coefficient in May - June was noted (r = 0.77). We observed ambiguous impact of agro-climatic resources (precipitation and temperature) on individual genotypes of scarious oat. The correlation of yield with the value of hydrothermal coefficient ranged from 0.84 in Otrada variety to -0.84 in Peron variety. The main elements of the structure of productivity, ensuring the formation of the grain yield of scarious oat in the zone of the Northern Trans-Urals, were revealed. They are the preservation of plants to harvest (r = 0.83), the number of productive stems (r = 0.44), productivity of one plant (r = 0.56), productive tillering (r = 0.84), and the number of grains per a panicle (r = 0.63).
Keywords: variety, oat, productivity, elements of the structure of productivity, influence of weather conditions.
Author Details: M.N. Fomina, Cand. Sc. (Agr.), senior research fellow (е-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.).
For citation: Fomina M.N. Productivity of Scarious Oat Varieties and Peculiarities of Its Formation under Conditions of the Northern Forest Steppe of Tyumen Region. Dostizheniya nauki i tekhniki APK. 2016. V.30. No. 12. Pp. 24-27 (in Russ.).