GENETIC-VARIATION IN SCOTCH PINE (PINUS-S YLVESTRIS L) UNDER INDUSTRIAL-POLLUTION IN THE SOUTHERN URALS - MUTAGENESIS

Mutant isozymes, revealed by polyacrylamide gel electrophoresis, were studied in three Scotch pine populations. Two populations were located in regions strongly contaminated by industrial air pollutants. The th ird population was a control and occupied an uncontaminated region. It was shown that the rate of spontaneous mutagenesis increased under in dustrial stress. Total frequencies of mutations and mutation-like even ts per locus calculated for three groups of abnormal isozymes were 7.2 x 10(-4) and 4.60 x 10(-3) in populations under industrial pollution and 1.6 x 10(-4) in the control.