The article presents the results obtained under indoor conditions in the study of biomorphological
and morphophysiological features of some varieties of the genus Cymbidium, the change of age
periods in ontogenesis, especially the development cycle of vegetative and generative shoots.
Morphophysiological studies have shown that in stage I of organogenesis, regardless of type, new
shoots of Cymbidium are formed from the previous vegetative shoot in the form of an axillary
meristem, while it is still in the phase of internal bud development.At stage II of organogenesis,
a year after the beginning of shoot growth, 8-11(12) primordium leafy shoots surrounding the
growth cone are formed from its axillary meristem. In August-October, the growth cone of the
generative shoot differentiates, i.e. the generative shoot enters stage III of organogenesis. During
this period, the generative shoot begins to grow intensively and enters stage IV of organogenesis.
At this time, the axis of the inflorescence is formed, the basis for flower formation is laid, then the
flower base, pistil and stamen are formed. At the V stage of organogenesis, in the second decade of
July, mass formation of generative shoots is observed. Formation and development of flowers in the
inflorescence occurs acropetally.At this time, all flower organs grow very slowly, and only shortly
before flowering the plant enters the VI-VIII stage of organogenesis. Depending on the variety,
stage IX of organogenesis occurs in December-February and lasts until May. Fetal formation, growth
and development (X-XII stages of organogenesis) takes 10-12 months. As the fruits mature, the
generative shoot withers, which means the completion of its development cycle. Thus, the studies
have shown that the process of organ formation in orchid shoots is subject to general biological
regularity and combines features characteristic of certain species and varieties.