Abstract
The oil flax cultivar Y 220 is developed by a method of individual selection from a line k4165 at severe background after 6-field flax monocrop. It was estimated by resistance to fusariose in epicentrum of fusariose infection and to flax sickness at monocrop cultivation. Due to results of variety trials for 2019–2020, the cultivar Y 220 exceeded the standard cultivar FLIZ by yield by 0.77 t per ha. Plant height is 80–90 cm. Vegetative period is 75–80 days. Weight of 1000 seeds is equal to 6.02–6.06 g. Seeds color is brown. Oil content is 44.4%; linolenic acid content is lowered (23.3%). The cultivar Y 220 is differed with full resistance to flax sickness and high field resistance to fusarium wilt. This makes it possible to cultivate it in short crop rotations and at monocrop.
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