Some results of reproduction by green shanks the introduced species of genera Sorbus L

Ability to reproduction by summer shanks some species of genera Sorbus L., introduced in middle taiga subzone in Komi Republic is studied. The best indicators of rooting the shanks of Sorbus sambucifolia differed. Positive influence of root forming stimulators and application of processing method - a bark cut in the shank basis on results of rooting is shown.