Morphological Transformation of Thymus baicalensis (Lamiaceae) in Different Environmental Conditions
E. B. TALOVSKAYA
Central Siberian Botanical Garden, SB RAS, 630090, Novosibirsk, Zolotodolinskaya str., 101
Keywords: Thymus baicalensis, dwarf shrub, shoot formation, life form, morphological adaptation, environmental conditions
Abstract
Shoot formation and life forms of Thymus baicalensis were studied in different environmental conditions on the Olkhon island. Different life forms were typical for different habitats: in mountain steppes, on a hilltop — vegetatively-immobile aeroxylic dwarf shrubs, on a hillside — vegetatively-immobile prostrate dwarf shrubs, in sandy steppes — cushion-like life forms. The base part of the bush of adult individual forms was formed by the skeletal axis with monopodial and sympodial growth. Morphological adaptation mechanisms in different conditions is to change the structure of the axes, duration of the growth, the nature of rooting and position in space. The mechanism of morphological adaptation to different environmental conditions was expressed by changing the structure of the skeletal axes, duration of their growth, nature of rooting and position in space.
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