Introduction of Caucasian Species of Genus Sorbus L. in the Kola Peninsula

• Main Author: Goncharova , Oksana А.
• Format: Text
• Language: Russian
• Published: Southern Federal University 2019
• Subjects: woody plants; introduction; phenological development; Sorbus L. - mountain ash; Kola Peninsula; kola peninsula
• Online Access: https://dx.doi.org/10.23683/0321-3005-2019-1-101-105; https://hub.sfedu.ru/repository/material/801260116/?direct_link=true

The phenological development of the introduced Caucasian mountain ash on the Kola Peninsula is studied. In the study used phenological data 1997-2017. Entering into the beginning of the growing season occurs within 4 days in the second half of May. Vegetation in native species of mountain ash begins 5-10 days earlier than in introduced Caucasian species. The end of vegetation is dragged out for longer term (to 10 days). Emergence of autumn coloring of leaves is noted since the beginning on the middle of September. Duration of linear growth of escapes of the intro-duced types of the sort Sorbus is from 32 to 40 days. At the introduced plants blossom and fructification are observed irregularly. Duration of blossom is 5-7 days. The abundance of blossoming and fructification is estimated at the in-troduced plants 1-2 points, at a native look - 3-4 points. The introduced Sorbus samples are characterized by incom-plete lignification of the shoots, winter hardiness of 3-4 points, low ability to form shoots. The Caucasian species of Sorbus are characterized by a timely start and end of the growing season, a short growth of shoots, an average duration of the pre-flora period. Flowering and fruiting irregular. Plants do not retain their life form when introduced in the Far North. S. albovii, S. buschiana, S. fedorovii, S. subfusca are unpromising species for growing on the Kola Pen-insula, are of interest to scientific collections.