Intraspecific Variation of Betula pendula Roth With Respect to Triterpene Content in Leaves
A. K. Makhnev, E. S. Degtyarev, S. V. Migalina
Keywords: silver birch, Betula pendula Roth, triterpene spirits of dammaran row, biochemi- and chemitaxonomy, intra- and interpopulation variability, latitudinal row of populations, group of populations (megapopulation)
Pages: 237-244
Abstract
Changes in the content of triterpene alcohols of dammaran series in the leaves of Betula pendula Roth along the zonal-climatic trasect from the northern to the southern limit of the range of this species in the Trans-Ural region was studied for the first time. It was shown that the populations from the northern and southern regions differ in the amount of triterpenes. A connection between the content of triterpene alcohols in the leaves of Betula pendula with climatic parameters was revealed. In this situation, the amplitude of intra-population variability of triterpene content is essentially lower than that of inter-population variability, which is the evidence of the promising character of population selection on the basis of this biochemical index.
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