Transformation of Life Forms and Ontogenetic Structure of Nepeta pulchella Pojark. Coenopopulations in Acsy-Zhabaglinsky Nature Reserve
A. Yu. ASTASHENKOV1, V. A. CHERYOMUSHKINA1, A. V. GREBENYUK2, S. D. DZHUMANOV3
1Central Siberian Botanical Garden, SB RAS, 630090, Novosibirsk, Zolotodolinskaya str., 101
2V. L. Komarov Institute of Botany, RAS, 197376, St. Petersburg, Prof. Popov str., 2
3Aksu-Zhabaglinsky Nature Reserve, 131610, Zhabagly, Abay str., 8
Keywords: Nepeta pulchella, морфология, жизненные формы, онтогенез, морфологическая адаптация, ценопопуляции, Аксу-Жабаглы, Nepeta pulchella, morphology, life forms, ontogenesis, morphological adaptation, coenopopulations, Aksu-Zhabagly
Abstract
The present paper is devoted to the results of study of ontogenesis and structural-morphological pattern of Nepeta pulchella individuals of different life forms. Ecological-coenotic conditions of the species habitats within Aksu-Zhabaglinsky Nature Reserve are characterized. N. pulchella occurs from the middle part of the mountains to the subalpine belt. Status of coenopopulations in two types of plant communities has been assessed. Depending on various ecological-coenotic conditions N. pulchella individuals have two life forms: taprooted caudex and short-rooted- taprooted. Individuals of these biomorphs pass complete complicated ontogenesis. The following morphogenetic phases are described for the first biomorph: primary shoot -> main axis -> primary bush -> clone and for the second one - primary shoot -> main axis -> primary bush -> tillering particle -> not tillering particle. The coenopopulations studied are normal, transitional to mature, resistant and incomplete. Ecological-coenotic and structural-morphological analyses have made it possible to reveal in N. pulchella individual morphogenesis a number of characters indicative to phylogenetic link with сlosely related taxa.
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