CYTOGENETIC AFTER-EFFECTS OF MUTAGEN SOIL CONTAMINATION WITH EMISSIONS OF BURSHTYNSKA THERMAL POWER STATION - Ecological Consequences of Increasing Crop Productivity - page 225

A high level of chromosome alteration, caused by soil pollution near ash-dispos-
able No 1 of Burshtynska TPS, did not show a wide spectrum of their types and con-
tained mostly acentric fragments and dicentric bridges. In meristem cells of wheat
plantlets of 'Albatross odeskyi,' contrary to 'Zymoiarka' cultivar, a dominating aber-
ration type was pair fragments and chromosome bridges. An anaphase cell with a lag-
ging chromosome was identifi ed among them.

21.4 CONCLUSIONS
A complex effect of soil pollutants of the areas adjacent to Burshtynska TPS and ash-
disposal area No 1 therefore causes the increase of the cytogenetic disorder level in
meristem root cells of winter wheat plantlets by 1.5-2.5 and 1.8-3.0 times, respec-
tively. The highest chromosome aberration frequency was recorded with the mutagen
effect of the soil taken at a distance of 3-5 km from the contamination source. Their
spectrum is mostly presented by singular and pair fragments, and dicentric bridges.
Harmful emissions of Burshtynska TPS, absorbed by the soil, result in mitosis anom-
aly, which is seen in blocking the threads of division spindle and the emergence of the
cells with lagging chromosomes. The increased mutation level, found in the vicinity
of Burshtynska TPS, confirms the fact of potential negative genetic after-effects of the
emissions from the stationary sources of thermal power engineering on the organisms;
and it requires further implementation of the monitoring of the areas adjacent to TPS
of Ukraine.

KEYWORDS

￿ Chromosome aberrations

￿ Genetic consequences

￿ Mitosis disorder

￿ Mutagens

￿ Triticum aestivum L.

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