The evaluation of promising rice varieties by the harvest structure elements and technological grain qualities was carried out in the article. The study was conducted in the trial fields of the Primorsky Scientific Research Experimental Station of Rice (branch office of Federal Scientific Agrobiotechnology of the Far East named after A. K. Chaika) in 2018–2020 (Spassky district, Novoselskoye). Eleven variety samples of the competitive variety trial were used as the material for the study. The experiments were performed with four-time repetition on the plots with an area of 25 m2 each. Primorsky 29 variety was used as the standard. The irrigation regime was shortened. KS 123 was notable for its growing season as it ripened 4 days earlier than the standard. KS 117 and KS 122 were 12,4 and 16,5 cm respectively lower in height than the standard. The studied samples showed good productive tilling capacity and high grain content of the main panicles. According to technological grain qualities, samples were characterized by high yield of cereals and vitreousness (up to 100 %), low hoodness (up to 18 %) and stress crack. KS 14 and KS 117 were notable for the grain size; the mass of 1 000 grains was of 34,2 and 34,9 g respectively. The variety samples selected in the competitive variety trial will be used in the breeding process. According to a complex of the economically valuable traits, a low-growing and lodging-resistant sample KS 117 with high panicle productivity (179 grains), 1 000 grains mass (34,9) and vitreousness (up to 100 %) was distinguished.

Guchenko Svetlana S., Borzanitsa Alexander A., Belskaya Nina G.

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