Naturalization of Fragaria x ananassa Duch. in Western Siberia
S. O. BATURIN
Institute of Cytology and Genetics, SB RAS, 630090, Novosibirsk, Lavrentyeva ave., 10
Keywords: Fragaria x anаnаssa Duch, Fragaria vesca L, натурализация, колонофит, инвазионный вид, адвентивная флора, изменчивость, адаптация, Западная Сибирь, nаturalization, colonophyte, invasive species, adventive flora, variability, adaptation, Western Siberia
Abstract
The naturalization process of Fragaria x ananassa in Western Siberia has lasted for about 80 years, since the first garden strawberry cultivars appeared on agricultural experiment stations in 1933. Over such a long period of time the invasive status of the species has changed insignificantly (from “casual alien plants” to “naturalized plants”). According to the degree of naturalization, the species belongs to colonophytes. F. x anаnаssa appeared in natural phytocenoses due to ornitochory. At present the naturalization process of F. x anаnаssa is going in two directions: genetic transformation in the long-existing coenopopulations and re-invasion of new ecotypes of the same species into natural phytocenoses. The high death rate of seedlings of the naturalized F. x anаnаssa restricts the species from occupying regeneration niches in natural phytocenoses. Accordingly, the status of an “invasive species” is inapplicable to F. x anаnаssa at the present stage of naturalization in Western Siberia.
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