MORPHOMETRIC FEATURES OF NEEDLES OF INTRASPECIFIC FORMS OF SIBERIAN LARCH WITH DIFFERENT CONE COLORS
A. S. Aver’yanov, T. S. Sedel’nikova
Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science, V. N. Sukachev Institute of Forest, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russian Federation
Keywords: Larix sibirica Ledeb, variability, morphological features of needles
Abstract
The article presents the results of a study of the variability of morphological features of vegetative organs (the number of needles in a bunch and the length of the needles) in intraspecific forms of Siberian larch ( Larix sibirica Ledeb.), differentiated by the color of young female cones into red-coned ( f. rubriflora Szaf.), green-coned ( f. viridiflora Szaf.) and pink-coned ( f. rosea Szaf.). The study was conducted over three years (2020-2022) in a cenopopulation of Siberian larch of artificial origin, created in an ecologically safe urbanized part of Krasnoyarsk - microdistrict of Akademgorodok. It was found that the variability of needle features in intraspecific forms of Siberian larch has an annual and form specificity. The variability of the number of needles in a bunch and the length of the needles in the red-coned, green-coned and pink-coned forms varies from average to high levels over the years. According to the average data for a three-year period, the red-coned form of trees is distinguished by the lowest values of the number of needles in a bunch and the length of the needles, the green-coned form is distinguished by the greatest length of the needles, and the pink-coned form is distinguished by the greatest number of needles in a bunch. The revealed morphological features of the needles can be considered as diagnostic features of intraspecific forms of Siberian larch with different colors of female cones, forming the population structure of the species in different growing conditions.
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