Библиографическое описание:Genetic Diversity of Coenopopulations of Larix sibirica Ledeb. and Picea obovata Ledeb. in Taimyr : научное издание / N. V. Oreshkova, T. S. Sedel’nikova, A. V. Pimenov. - Текст : непосредственный // Contemporary Problems of Ecology. - 2023. - Т.16, №5. - P. 612-619. - This work was carried out as part of the State Task of the Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, on the topic “Functional-Dynamic Indication of the Biodiversity of Siberian Forests” no. FWES-2021-0009. - ISSN 1995-4255. - ISSN 1995-4263, DOI 10.1134/s1995425523050098.
Аннотация:The DNA polymorphism of cenopopulations <i>Larix sibirica</i> Ledeb. and <i>Picea obovate</i> Ledeb. growing in different ecological conditions of the southern part of the Taimyr Peninsula has been studied and their genetic diversity in nuclear microsatellite loci is estimated: <i>N</i><sub>A</sub> = 3.30, <i>N</i><sub>E</sub> = 1.75, <i>H</i><sub>O</sub> = 0.263, and <i>H</i><sub>E</sub> = 0.366 in <i>L. sibirica</i> and <i>N</i><sub>A</sub> = 2.92, <i>N</i><sub>E</sub> = 1.59, <i>H</i><sub>O</sub> = 0.351, <i>H</i><sub>E</sub> = 0.338 in <i>P. obovata</i>. In general, a deficiency of heterozygous genotypes (<i>F</i> = 0.177) in the studied populations of Siberian larch and an excess of heterozygous genotypes (<i>F</i> = –0.051) in populations of Siberian spruce are noted. The genetic features of these species under the influence of technogenic emissions in the Norilsk industrial region are examined. In <i>L. sibirica,</i> a higher allelic diversity and a higher level of inbreeding are found in the cenopopulation from an ecologically safe area, while a higher level of heterozygosity and a lower value of the inbreeding coefficient are noted in the area with an increased level of pollution. A comparison of the cenopopulation samples of <i>P. obovata</i> has shown that the genetic structure of the stand from the ecologically favorable area is practically in equilibrium, while a 10% excess of heterozygotes is recorded in the more polluted area. Despite certain differences between the two studied species, in general, cenopopulations of <i>L. sibirica</i> and <i>P. obovata</i> growing in areas with an increased, but acceptable, level of technogenic load in the Norilsk industrial region are characterized by higher values of almost all parameters of genetic variability. We suggest that this pattern reflects the activation of adaptive processes in coniferous populations from extreme growing conditions.
Издательство:Pleiades Publishing, Ltd. (Плеадес Паблишинг, Лтд), Новосибирск
Источник:Contemporary Problems of Ecology
Выпуск:Т.16, №5
Номера страниц:612-619
Держатель оригинала документа:Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Siberian Federal University, Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences
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