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- Title
Genetic variation and population differentiation in Siberian fir Abies sibirica ledeb. inferred from allozyme markers.
- Authors
Semerikova, S.; Semerikov, V.
- Abstract
Genetic variation in 24 populations of Siberian fir Abies sibirica Ledeb. from the Urals, West Siberia, East Siberia, South Siberia, and the Baikal region were examined using allozyme markers. Three out of fifteen allozyme loci proved to be polymorphic. Heterozygosity H e was 6.6–9.6%, which is substantially lower than that in other widely spread boreal conifers. Our results suggest that the Siberian fir populations are subdivided into four geographic groups: (1) the Baikal Lake group, (2) the Sayan and the Altai group, (3) the Middle and Southern Urals group, and (4) Subpolar and Northern Urals group. This pattern of geographic differentiation may be explained by the preservation of the Siberian fir during the last glacial maximum (18 000–22 000 years B.P.) in isolated refugia with subsequent recolonization of the present area. F ST in the populations examined was 10.16%, which is comparable to the estimate for Larix sibirica (7.9%), a conifer species having a similar range and pattern of geographic population differentiation.
- Subjects
URAL Mountains (Russia); SIBERIA (Russia); GENETIC research; PLANT genetics; SIBERIAN fir; CONIFERS; ISOENZYMES; PHYTOGEOGRAPHY
- Publication
Russian Journal of Genetics, 2006, Vol 42, Issue 6, p636
- ISSN
1022-7954
- Publication type
Article
- DOI
10.1134/S1022795406060081