Using cultivars of Spiraea L. species as an example, the data concerning advisability of system approach to
working out of accelerated propagation technology are obtained. It is a parallel research of the growth dynamics,
sprout development and a vegetable organism as a whole during a vegetative period and their conformity to
ecology conditions of the region. Considering the rhythms of growth and sprout development of the new in the
region cultivars for determination of optimal terms of their cutting facilitates their natural potential usage before
the rhizogenesis. It is the bioecology base for obtaining a full-value plant material of the given cultivars adapted to
complex ecological conditions of Donbass.

Dovbysh N.F., Kharkhota L.V., Yerokhina N.S.