SCREENING OF OILSEED FLAX AND FIBRE FLAX VARIETIES BY RADICLE DEVELOPMENT
A comparative analysis of 10 varieties of oil flax of Belarusian breeding and 9 varieties of fiber flax of different maturity groups was carried out in terms of the development of the embryonic root system under laboratory conditions by the method of seed germination in rolls. It was established that at the initial stages of growth oil flax varieties formed a larger length of the germinal root and its weight, as well as the total length and weight of roots. The average value of the indicators for oil flax was 18.02-21.16 cm; 0.061-0.070 gm; 798.7-1016.8 cm; 2.529-3.437 gm, respectively, for fiber flax varieties - 15.49-18.66 cm; 0.047-0.060 gm; 604.43-896.18 cm; 1.819-2.953 gm respectively. The varieties of oil flax (Ilim, Focus, Bonus) and fiber flax (Taler, Mogilevsky, Orshansky-2) with high indicators of the studied traits for the development of the embryonic root system were identified. They are suitable for the use in breeding when creating crop varieties that are resistant to stressful conditions.