[Genetic diversity and mating system Pinus brutia var. Stankewiczii sukacz. in small localities of Sudak (Crimea)].

A comparative analysis of genetic variation at 12 polymorphic isozyme loci, and the mating system has been carried out in mature trees and their seed progeny in three small localities of Pinus brutia var. stankewiczii Sukacz. near the town of Sudak--settlement of Novyi Svet in the Crimea.

[Genetic variability of juniper tall (Juniperus excelsa Bieb.) in the northern and southern limits of the natural distribution].

Genetic structure, subdivision and differentiation of six populations of juniper tall (Juniperus excelsa Bieb.) of the Crimean Mountains and of one population in Lebanon were investigated using 18 polymorphic allozyme loci as genetic markers. The high level of genetic variability of J.

[Cytogenetic abnormalities in seedlings of Norway spruce (Picea abies (L.) Karst.) from the natural populations and introduction plantation].

Comparative studies of the frequency and spectrum of pathological mitosis (PM), as well as of nucleoli number in the interphase cells of seedling roots have been performed in two natural populations of Norway spruce (Picea abies (L.) Karst.) of Ukrainian Polesie and introduction plantation in the Donbass.

[Genetic polymorphism for GOT and GDH loci of Scotch pine seed embryos in the area of nitrogen emissions from the chemical enterprise].

Variability for the loci GOT and GDH of seed embryos of three subpopulations of Pinus sylvestris L. exposed to the emissions from the chemical enterprise manufacturing nitrogen fertilizers was studied during four years. The trend to heterozygosity reduction and increased occurrence of the cases of significant deviation of the distribution of genotypes from the theoretically expected one was shown.

[Allozyme variation of seed embryos and mating system in relict populations of Scots pine (Pinus sylvestris L.) from the Kremenets Hill Ridge and Maloe Poles'e].

Allozyme variation at ten polymorphic loci and mating system was studied in three small isolated relict populations (4.4 to 22 ha) and in three artificial stands of Pinus sylvestris from the Kremenets Hill Ridge and Maloe Poles'e. It was established that the mean heterozygosity of 130 to 140 year-old trees from natural populations (H(O) = 0.