Morphobiological features of Dracocephalum krylovii Lipsky in ex situ conditions in the Kuzbass Botanical Garden

Federal Research Center of Coal and Coal Chemistry SB RAS, Leningradskiy prospect, 10, Kemerovo, 650065, Russia

^* Corresponding author: oksana_vronski@mail.ru

Abstract

One of the methods of preserving the natural gene pool is its ex situ cultivation. For the first time he results of evaluation of morphobiological features of Dracocephalum krylovii at introduction were obtained in the Kuzbass Botanical Garden. The period of flowering and the sum of positive temperatures above 0 °C, effective temperatures above +5 °C, active temperatures above +10 °C, necessary for such phenophases as regrowth, budding, flowering, fruiting were determined as well as the initial stages of Dracocephalum krylovii’s development were studied. During the first year of growth of bions, latent and regenerative periods are distinguished. Under culture conditions an orthotropic elongated sprout is formed in the first year of life, the basal part of which is retracted into the soil and takes part in the construction of the underground perennial shoot structure