Abstract
Twelve natural populations of four cedar pine species,Pinus sibirica, P. cembra, P. pumila, andP. koraiensis, occurring in the Soviet Union were investigated by starch-gel electrophoresis. Frequencies of 55 alleles at 19 loci were determined. Interpopulation genetic diversity inP. sibirica andP. pumila was only 2–4 per cent of the total genetic diversity. Nei's distance coefficient (Dn) was used to estimate the level of genetic differentiation among conspecific populations and among species. Dn values among populations ranged from 0.006 to 0.038. A dendrogram constructed using Dn values divided cedar pines species into 2 clusters:sibirica-cembra (Dn = 0.030) andpumila-koraiensis (Dn = 0.143). Nei's distance between these clusters was 0.232. On the basis of the data obtained it was possible to draw the following conclusion:P. sibirica, P. pumila, andP. koraiensis are distinct species, whileP. cembra should apparently be regarded as geographicalP. sibirica race.
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Goncharenko, G.G., Padutov, V.E. & Silin, A.E. Population structure, gene diversity, and differentiation in natural populations of Cedar pines (Pinus subsect.Cembrae, Pinaceae) in the USSR. Pl Syst Evol 182, 121–134 (1992). https://doi.org/10.1007/BF00939186
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DOI: https://doi.org/10.1007/BF00939186