Abstract
A study of allozyme spectra has been performed in dandelion cenopopulations growing for a long time under conditions of chemical pollution (the zone of the Nizhnii Tagil Metallurgical Plant, NTMP) or radioactive contamination (the zone of the Eastern Ural Radioactive Trace, EURT). Cenopopulations from the NTMP and EURT zones and from the background area differ significantly in the qualitative and quantitative composition of allozyme phenes. An analysis of clonal diversity has shown that all cenopopulations are phenogenetically unique. The genesis of each cenopopulation proceeded in a specific way: they had different sets of progenitor plants, whose descendants varied genetically in the course of their reproduction and more or less successful colonization of habitats, undergoing selection under the impact of natural environmental factors and technogenic stress. An increased variability of enzyme systems, compared to the sample from the background area, and, as a consequence, reduced clonal diversity may be regarded as a trait common to populations exposed to chemical or radiation stress.
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Original Russian Text © E.V. Antonova, V.N. Pozolotina, 2007, published in Ekologiya, 2007, Vol. 38, No. 5, pp. 355–361.
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Antonova, E.V., Pozolotina, V.N. Specific features of the allozyme structure of dandelion populations under conditions of radionuclide and chemical contamination. Russ J Ecol 38, 327–333 (2007). https://doi.org/10.1134/S1067413607050062
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DOI: https://doi.org/10.1134/S1067413607050062