Home – Home – Jornals – Flora and Vegetation of Asian Russia 2016 number 4

The article provides information about the environmental and reproduction characteristics of white-fl owered (anthocyanin-free) form of Impatiens glandulifera Royle, the annual species of West-Himalayan origin, which is commonly grown in culture and now referred to the number of invasive plants in Siberia. A stable population of this species with significant admixture of white-flowered form ( I. glandulifera f. albida (Hegi) B. Boivin) was found by the authors in 2013 in the outskirts of Tomsk (Tomsk Region). Description of community with domination I. glandulifera were made twice, in 2014 and in 2016 respectively. In conjunction with the dominant species, other 40 species of flowering plants were recorded both times (however, the species composition changed somewhat). Regular flowering and abundant fruiting of white-flowered form during four growing seasons (2013-2016) was observed. In the study population, all three color forms of I. glandulifera (i. e. lilac, rose, and white) are formed viable seeds, which are characterized by physiological dormancy (B₁ type). High laboratory germination rate of I. glandulifera seeds (over 90 %) was revealed. Based on the research we concluded a successful naturalization of white-flowered (anthocyanin-free) form of Impatiens glandulifera . Obviously, this phenomenon is recorded for the first time in Russia.