Influence of methods of selection of fiber flax plants (<i>Linum usitatissimum L.</i>) on the quality of renewed seeds

Relevance. The efficiency of creating high-quality renewed fiber flax seeds depends on the methods of selection of initial plants. The development of more advanced methods for selecting the source material, which makes it possible to ensure less laborious creation of the original material, which has a complex of qualitative features and properties, at the initial stages of seed production is relevant and has practical significance.Methods. The experiments were carried out in accordance with the existing methods for laying and conducting experiments with fiber flax, guidelines for the primary seed production of the crop. The varietal quality of the created seed material was evaluated by the soil control method.Results. It is established that the method of selecting plants by the total length of the stem in combination with seeding 200 pcs. germinating seeds per 1 pоg. m row, compared with the selection according to the current method, provided the highest yield of updated flax seeds (91.8 g/m2), the highest uniformity in weight (82%) and density (92%) of the seed, as well as seed strength (2.9 g per 100 seedlings), the mass of 1 cm of the seedling (5.1 mg) while maintaining the required level of sowing and varietal quality of the original material. The advantage of the increased seeding rate (200 seeds/m) in the selection nursery compared to the sowing of 150 seeds with both methods of selecting the source material was revealed. In all variants of the experiment, seeds with a good level of varietal quality were formed. When conducting a production check, the advantage of the selection method for the total length of the stem was confirmed in comparison with the accepted analogue.