LIFE FORM, ONTOGENESIS AND ONTOGENETIC STRUCTURE OF ZIZIPHORA SUFFRUTICOSA COENOPOPULATIONS IN TAJIKISTAN
V.A. Cheryomushkina1, K.A. Bobokalonov2
1Central Siberian Botanical Garden, SB RAS, 630090, Novosibirsk, Zolotodolinskaya, 101
cher.51@mail.ru
2Institute of Botany, Physiology and Plant Genetics, AS Republic Tajikistan, 734017, Dushanbe, Karimova str., 27
kobil_5@bk.ru
Keywords: Ziziphora suffruticosa, Lamiaceae, жизненная форма, полукустарничек, онтогенез, онтогенетическая структура ценопопуляций, Таджикистан, Ziziphora suffruticosa, Lamiaceae, life form, dwarf subshrub, ontogenesis, ontogenetic structure of coe nopopulation, Tajikistan
Abstract
In the north of Tajikistan, shoot formation and ontogenesis of a dwarf subshrub Ziziphora suff ruticosa Pazij et Vved. (Lamiaceae) were studied. It was established that ontogenesis of individuals is simple, incomplete, its duration is at least 20-25 years. In individuals, the polytivariance of ontogenesis was revealed, expressed in diff erent rates of development and omissions of the immature and virginal ontogenetic states. The description of shoot formation was showed that the specimen is characterized by a bazi-simpodial growth and the formation of the life form of a dwarf subshrub. The ontogenetic structure of six coenopopulations on the Kuraminsky and Mogoltau ranges was studied. Self-preservation of coenopopulations occurs exclusively by seed. Density does not exceed 3.7 individuals per 1 m2. In the studied coenopopulations, two types of spectrum are formed: centered with a peak in mature generative individuals and right-sided with a peak in old generative ones. The latter type of spectrum is formed under a strong anthropogenic load. All coenopopulations by demographic indicators are characterized as mature, stable.
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