title: [Genetic variability in Scots pine populations from the Bryansk region contaminated by radioactive pollutants as a result of the Chernobyl NPP accident].
abstract: The method of isozymic analysis of megagametophytes is used for an estimation of genetic variability in populations of Scots pine (Pinus sylvestris L.), inhabiting contrast on the level of radioactive contamination (60-17800 Bq/kg on 137Cs) sites in the Bryansk region, undergone to radioactive pollution as a result of the Chernobyl accident. Values of all investigated parameters of genetic variability (heterozygosity, frequency of polymorphic loci, Jivotovski index) and frequencies of the mutations for loss of enzymatic activity increase with a doze absorbed by critical organs of pine trees. Presented data show that a high level of mutation occurrence is intrinsic for descendants (seeds) of pine trees in the investigated populations, and genetic diversity in the populations is essentially conditioned by radiation exposure.
authors.forename: S A
authors.initials: SA
authors.lastname: Geras'kin
authors.forename: Iu S
authors.initials: IuS
authors.lastname: Vanina
authors.forename: V G
authors.initials: VG
authors.lastname: Dikarev
authors.forename: T A
authors.initials: TA
authors.lastname: Novikova
authors.forename: A A
authors.initials: AA
authors.lastname: Udalova
authors.forename: S I
authors.initials: SI
authors.lastname: Spiridonov
mesh_terms: D047852:Chernobyl Nuclear Accident; D014644:Genetic Variation; D007527:Isoenzymes / Q000235:genetics; D009154:Mutation; D041605:Pinus sylvestris / Q000201:enzymology / Q000235:genetics* / Q000254:growth & development / Q000528:radiation effects*; D011834:Radiation Monitoring / Q000379:methods*; D012426:Russia; D012990:Soil Pollutants, Radioactive / Q000633:toxicity*; D014455:Ukraine
chemical_list: D007527:Isoenzymes; D012990:Soil Pollutants, Radioactive