FEATURES OF SHOOT FORMATION AND REPRODUCTION OF RASPBERRY VARIETIES BY ROOT GROWTH
The results of research on reproduction by root growth of promising varieties of valuable berry crop - raspberries are presented. Every year, the demand for planting material of this culture increases. A widespread method of reproduction of raspberries is root growth. Studies have shown that the shelling ability of raspberries significantly depends on the varietal features of the culture. In the conditions of the Omsk region, the peculiarities of the formation of root growth by various varieties of raspberries and the possibility of its use as planting material were revealed. The yield of raspberry planting material from one linear meter of the tape at the Barnaul control variety varies by year from 36 pcs to 143 pcs, while in the Runaway variety, respectively, from 51 to 63 pcs. The yield of standard raspberry seedlings varies by year. It is the highest in the varieties Barnaul and Balsam 90,9-92,7%, while in the Hussar variety it is only 58,7%. The raspberry varieties Patricia, Hussar and Barnaul differ in the increased shelling ability, the high yield of standard seedlings when propagating with root piglets. The average yield of standard seedlings is 269500-304755 pcs./ha. When propagating raspberries by this method, all grade features are preserved, which allows you to grow high-quality planting material that meets the requirements of the standard.