Morphological Plasticity of Hedysarum austrosibiricum B. Fedtsch (Fabaceae) Shoots in Different Ecological and Geographic Conditions
E. V. ZHMUD1, O. V. DOROGINA1, A. A. ACHIMOVA2
1Central Siberian Botanical Garden, SB RAS, 630090, Novosibirsk, Zolotodolinskaya str., 101
2Gorno-Altaisky Botanical Garden, Branch of Central Siberian Botanical Garden, SB RAS, 649218, the Altai Republic, Shebalino Region, Kamlack village, Chisty lug
Keywords: эндемичный вид Hedysarum austrosibiricum, изменчивость, морфологические признаки, высокогорные условия, бобовые растения, endemic species Hedysarum austrosibiricum, variability, morphological features, high-mountain conditions, leguminous plants
Abstract
Morphostructural features of the aerial part of the shoots of the endemic to Siberia species Hedysarum austrosibiricum B. Fedtsch in the mountain conditions of the Altai and Khakasiya Republics at the altitude range of 1200-2350 m above sea level were studied. A complex of adaptive morphological characters to high-mountain conditions in representatives of the species was revealed. A significant tendency to reduce the size of leaflets of compound leaves and reduce the number of inflorescences on the shoot was noted. A tendency to a significant increase in productivity which showed itself in increase of diameter of the caudex and the number of shoots in individuals was revealed. The low degree of correlation between the values of most of studied morphological features reflecting the growth and development of individuals may be assigned to the adaptive features of the species.
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