Spatio-temporal dynamics of annual shoots growth of some Siringa vulgaris L. varieties in the Botanical Garden of the Ural Branch of the Russian Academy of Sciences
The study of the spatio-temporal dynamics of growth and morphogenesis of annual shoots of Siringa vulgaris twelve varieties from the collection of the Botanical garden UB RAS made it possible to evaluate these sorts as having prospects for growing in the conditions of the Middle Urals. Regularities of growth and morphogenesis of annual vegetative shoots of these varieties were established. The average duration of growth and development of vegetative shoots in 2021 is 102 days. Seasonal dynamics of apical growth of vegetative shoots is characterized by the presence of three phases: phase I of active growth, phase II of a decrease in the growth rate, phase III reaching a plateau and a complete cessation of growth. There are varieties characteristics in the growth rate of Siringa vulgaris. The fastest growth is observed in the Krasavitsa Moskvy sort. The effects of changes in climatic factors of the growing season on the growth dynamics of Siringa vulgaris shoots have been established.