[Analysis of genetic structure and differentiation of the bog and dry land populations of Pinus sibirica du tour based on nuclear microsatellite loci].

We evaluated the population structure of the bog and dry land populations of the Siberian pine Pinus sibirica (P. sibrica) in Western Siberia using nuclear genome markers. Six pairs of nuclear microsatellite loci were used for this analysis.

[Cytogenetic studies on submerged plants from the Yenisei river area in the zone of radioactive contamination].

Cytogenetic studies on three species of submerged plants from different parts of the Yenisei river area subjected to radioactive impact of the Krasnoyarsk Mining-and-Chemical Plant and the Electrochemical Factory have been conducted. A high level of irregularities in anatelophase and metaphase of mitoses has been revealed in test samples compared to the control: agglutination and fragmentation of chromosomes, lagging chromosomes, bridges, fragments, misdivisions, and others. The natuie of the disorders indicates that they are related in part to the direct damage to the chromosome structure and in part to damage to the spindle.

Supernumerary (B) chromosomes in populations of Picea abies (L.) H. Karst. from Western Rhodopes (Bulgaria).

Investigations on B chromosomes found for the first time for Picea abies (L.) H. Karst.

[Chromosomal mutations in Scotch pine (Pinus sylvestris L.) growing in a hydromorphic environment: a first case of a giant chromosome detection].

Chromosomal mutations and mixoploidy have been revealed in the seedlings of Scotch pine (Pinus sylvestris) growing in a hydromorphic environment. A giant chromosome was detected for the first time in gymnosperms.

[Chromosomal mutations in Siberian larch (Larix sibirica Ledeb.) on Taimyr Peninsula].

Chromosomal mutations were studied in the Norilsk population of Siberian larch (Larix sibirica Ledeb.) growing at the northeastern boundary of the species range affected by airborne smelter emissions. Different types of frequent chromosomal mutations have been revealed in the Norilsk population of L.