Интродукция охраняемого вида сирени венгерской (Syringa josikaea Jacg.) на Южном Урале

Abstract

The results of a long-term introduction study of Hungarian lilac, an endemic of the Carpathians and Transylvania, cultivated in the South Ural Botanical Garden-Institute of the UFIC RAS, are presented. The study used phenological data from 2005-2020. The beginning of the growing season for Hungarian lilacs falls on the period from April 14 to 30, flowering is observed annually in late May and early June. The duration of flowering over the last 5 years (2015-2020) averaged 16 days, which is 6 days shorter than the flowering period of this type of lilac in 2005-2009. The likely reason for the shortened flowering period is climate change. Complete lignification of the shoots of Hungarian lilac occurs in the second half of July. In Ufa, Hungarian lilacs have fruiting (seeds begin to ripen from September 18 to 27), as well as the presence of self-seeding. The beginning of leaf fall (the end of the growing season) coincides in timing with the beginning of seed ripening. All phenological phases of Hungarian lilac retain their sequence every year. Winter hardiness is usually I point (plants are absolutely winter hardy). The phenological atypicality index is -0.250 or 4 points according to Zaitsev, which means that the phenology of the species is fully consistent with the climatic conditions of Ufa. Thus, the introduction of Hungarian lilac in the South Ural can be characterized as successful and promising.