In 2017, for the first time in the world, the breeders of the laboratory of oil flax breeding of V.S. Pustovoit All-Russian Research Institute of Oil Crops developed an oil flax variety Y 117 by individual selection method on a hard background after 3-year monoculture of flax. The yield of Y 117 was significantly higher in the preliminary and competitive variety trials in comparison to the standard variety VNIIMK 620 – by 1.44 t/ha. The variety had a complex resistance to flax sickness and fungi of the genus Fusarium spp. Due to this, the variety is suitable for cultivation both in short (3-4 fields) crop rotation and in monoculture, including in the arid conditions of the regions of southern Russia, where the lack of water in the soil allows cultivating only a limited range of drought-resistant agricultural plants.