Winter variety of oil flax Snegurok

Based on the use of our own original technology of polyploid genome recombination (PGR), at VNIIMK, Krasnodar, frost-resistant parental reploid germplasm was obtained, and then a line k-4207 highly resistant to negative winter temperatures was isolated. In 2019, the frost-resistant line of oil flax k-4207, under the commercial name "Snegurok", was submitted to the State variety testing. Four-year field trials during winter sowing have shown that the new winter oil flax variety Snegurok is highly resistant to winter, including snowless frosts, and can withstand negative temperatures down to 20-23 °C without significant cryo-damages. In the conditions of the Krasnodar region, the flowering phase of this variety begins after 20th of April. Ripening of plants begins after 10th of June, when the spring sowing varieties of oil flax are in the flowering phase. The growing season of the variety, taking into account the winter period, is 238-244 days. The yield of the variety, on average for 2018-2019, was 2.27 t/ha, which exceeded the same indicator for the standard variety FLIZ of the spring sowing period, on average by 0.61 t/ha. The winter variety of oil flax Snegurok may be of commercial interest for agricultural producers in the dry steppe regions of southern Russia with rainfall up to 250-350 mm/year. It is developed for cultivation in the Central Black Earth, North Caucasus and Lower Volga regions of Russian Federation.