A. Wojnickapoltorak, CHANGES OF GENETIC-STRUCTURE OF PINUS-SYLVESTRIS L POPULATIONS EXPOSED TO INDUSTRIAL-POLLUTION, Acta Societatis Botanicorum Poloniae, 66(1), 1997, pp. 73-78
Isoenzymatic variation of Pinus sylvestris was analysed in populations
from a provenance trial (IUFRO 1982) in Kornik and their replication
in Lubon. The two groups of populations originated from the same seed
pool, but the one in Lubon was exposed to pollutants emitted during th
e production of nitrogen-phosphorus fertilizers,while the Kornik prove
nance trial were used as a control group. The parameters determining t
he genetic structure of the studied populations - frequency of alleles
and genotypes (average number of alleles and genotypes per locus), ob
served heterozygosity (H-o), and genotypic polymorphism index (P-g) -
have higher values in the group of trees tolerant to pollution. Also f
ixation index (F), which indicates that homozygotic genotypes underwen
t selection in this group, as well as dendrites and dendrograms accord
ing to Nei and Hedrick, suggest that the genetic structure of the popu
lations exposed to pollution was changed. The obtained results indicat
e that populations characterized by a greater genetic diversity are mo
re tolerant to pollution.