A spectrum of mitosis pathologies and chromosomal aberrations in the cells of root meristem of the Pinus pallasiana D.Don shoots from arboretum of the Kryvyi Rih Botanical Garden and plantation on the iron-ore dump was studied. The general level of cytogenetic violations was as follows: 2.92 % – arboretum; 7.09 % – trees of active genesial age (30 –35 years) on dump, 5.63 % – young trees entering reproductive age (7 –12 years) on dump. In the seeds from arboretum, pathologies of mitosis prevailed while in the seeds of plants of the same age from dump the chromosomal abnormalities obviously dominated. In this industrial region of the steppe area in Ukraine, P. pallasiana is fully appropriate species for cytogenetic monitoring of environmental pollution.

Keywords: Pinus pallasiana, pathologies of mitosis, chromosomal abnormality, seeds, iron-ore dump, Kryvyi Rih region

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