CHROMOSOME MUTATIONS IN FEN AND DRY VALLEY POPULATIONS OF ABIES SIBIRICA LEDEB.
T. S. Sedelnikova, A. V. Pimenov
The V. N. Sukachev Institute of Forest, Siberian Branch of RAS, Krasnoyarsk;
e-mail: Institute@forest.akadem.ru
Results of chromosome mutation investigation in Abies sibirica populations growing in fen and dry valley
in Western Siberia are presented. The frequency of chromosome aberrations and mitotic irregularities is higher in
dry valley population of the fir, than in its fen population. However, the spectrum of abnormalities registred in
metaphase and ana-telophase cells of the fir from fen is broader, compared to that from dry valley. These features
may be due to the fir genome reorganization in different environmental conditions, and indicate the plant reaction
to stress factors.
Key words: Abies sibirica, chromosome mutations, mitotic abnormalities
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