Amalova A., Kurmanbayeva M., Turuspekov Y., Ivashchenko A., Abidkulova K. Ontogenetic Structure Of Cenopopulations Of Tulipa Ostrowskiana Regel In Zailiysky Alatau

Kazakh National University named after al-Farabi, Kazahstan, city of Almata; Institute of Biology and Biotechnology of the Plant of the National Academy of Sciences of Kazakhstan

Abstract

The work was devoted to the study of the ontogenetic structure of cenopopulations of Tulipa
ostrowskiana Regel – a rare endemic species of the Northern Tien Shan, perennial plant from the Lili
aceae family. Cenopopulations of T. ostrowskiana has been studied in the territory of the Ile-Alatau State
National Natural Park the (Kaskelen Gorge, the Big Almaty Gorge and the Kotyrbulak Gorge) and its surroundings. The study of research on the ontogenetic structure of cenopopulations revealed the influence
of insolation regime of slopes on the age structure and morphometric parameters. An assessment of
the cenopopulation’s age structure showed the least quantity of generative individuals in the Kaskelen
gorge, apparently related to the fact that many generative individuals were eaten by the cattle on the
territory of this cenopopulations. The smallest of three collected cenopopulations was cenopopulation of
T. ostrowskiana found in the Kotyrbulak gorge, where the anthropogenic factor – construction of country
cottages and collection of flowering plants – had the greatest influence. Here, the area of this species’
growth is constantly decreasing. The average density of the cenopopulations at 20 test sites ranged from
2.37 ± 0.28 to 3.82 ± 0.84 individuals per 1 m2. In order to find similarities and differences in the cenopopulations of T. ostrowskiana, morphological and anatomical studies were made. During the studying, the first cenopopulation demonstrated morphological polymorphism in the flower color and form
of the leaf. We found differences in the anatomical structures: in the uppermost epidermis the outer cell
wall was toothed in shape, in the lowermost one, there was no teeth. In virginal individuals, the lining
layer of the conducting beams was not fully developed, while in generative individuals it was completely formed. Conductive beams in the peduncle are collaterally closed and scattered throughout the
peduncle.
Key words: endemic species, rare species, Tulipa ostrowskiana, cenopopulation, morphology, anatomy, ontogeny.