ONTOMORFOHENESIS HIPPOPHAE RHAMNOIDES L. IN CONDITIONS OF RIGHT-BANK FOREST-STEPPE OF UKRAINE

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ONTOMORFOHENESIS HIPPOPHAE RHAMNOIDES L. IN CONDITIONS OF RIGHT-BANK FOREST-STEPPE OF UKRAINE

Journal Title: Науковий вісник НЛТУ України - Year 2017, Vol 27, Issue 3

Abstract

Ontomorfohensis Hippophae rhamnoides L. was investigated in natural conditions in Ukraine and in a culture at the National Arboretum "Sofiyivka", NAS of Ukraine. As a result of observations of individuals it was found that the annual cycle of H. rhamnoides conforms to seasonal climatic fluctuations. During the plants growing within a large life-cycle, four ages periods and nine age classes were allocated: latent period (sm), pre generative period (p, j, im, v), generative period (g1, g2, g3) and period of old age (ss, s). Separations of ontogenesis periods are qualitatively different stages based on the consistent implementation at the period of various portions of the genetic information on a gradual phased deployment of genetic information development program. Each of the following periods of ontogeny has specific physiological properties and morphological features and covers as the establishment and the growth of new structures so physiological changes that prepare the emergence of these structures. The features of H. rhamnoides in different stages of ontogeny were described. Updated diagnostic features of age classes were given. It was established that individuals differ in pre generative period mainly by morphometric parameters of sprout system and root formation, young, mature and old generative individuals by reproductive development. A number of adaptive features were identified during onto morphogenetic study: simultaneous passing periods and stages ontomorfohenesis; with the increasing of light exposure and temperature leaf size of plates increases also; flowering does not occur at the same time and takes a different number of days of various lengths; possibility of natural vegetative reproduction of plants to form a flower bed. The obtained results expand the understanding of the biology of the studied species, especially the formation of sprout system and root formation that will help to identify the age state of plants and the development of rational methods of cultivation and breeding.

Authors and Affiliations

I. I. Mykolaiko

Keywords

age period; age states; shoots growth; flower formation; fructification; root formation

EP ID EP191663
DOI 10.15421/40270311
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