On Variation of Metric and Qualitative Characters of Nitraria L. Species in the Context of Ecological-Climatic Cinditions of Habitats in Siberia
E. V. BANAEV, M. A. TOMOSHEVICH, M. B. YAMTYROV
Central Siberian Botanical Garden, SB RAS, 630090, Novosibirsk, Zolotodolinskaya str., 101
Keywords: Nitraria sibirica, Nitraria schoberi, Сибирь, внутривидовая изменчивость, межвидовые различия, листовая пластинка, семя, лепесток венчика, пыльник, Nitraria sibirica, Nitraria schoberi, Siberia, intraspecific variation, interspecific dissimilarities, leaf blade, seed, corolla petal, anther
Abstract
Sizes of bushes, leaves, seeds and flower elements of Nitraria sibirica Pall. and N. schoberi L. were studied in 19 Siberian populations. It has been revealed that larger bushes 150-170 cm high, leaves 15-30 cm long and 5,7-8,8 mm wide, seeds up to 10 mm long, wider corolla petals about 2,5 mm and larger (by 1,2-1,5 times) anthers are typical of N. schoberi . Height of N. sibirica bush does not exceed 80 cm, length of a leaf blade varies from 8 to 15 mm; length of stones amounts to 3,7-7,4 mm; length of petals is somewhat more than 3,5 mm and that of anthers - 0,5-1 mm. Rather high constancy of metric characters typical of both species regardless of habitat conditions is shown. Climatic dependence is only followed by bush height in N. sibirica which is a trailing plant in the continental regions, especially in the high mountains of the Altai Republic. The vegetative organs (leaf blades and young stems) of N. sibirica are always more pubescent compared to those of N. schoberi .
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