Isoenzyme markers and polyacrylamide gel electrophoresis have been used to study the genetic structure of populations of Rhodiola iremelica Boriss. (Grassulaceae), a southern Ural endemic protected by the state and included in the Red Data Book of Bashkortostan Republic. A relatively large genetic variation at the species level has been found. The subdivision among populations (F ST = 0.115) is higher than in most cross-pollination angiosperms. No consistent pattern has been observed in the spatial distribution of its genetic variation. The relatively high differentiation among samples of R. iremelica characterized by small effective population sizes, may be accounted for by genetic drift, inbreeding, and a restricted gene flow. To preserve the population gene pool, in situ protection of the species in nature is insufficient. It seems advisable to create synthetic populations ex situ and reintroduce them into nature.
Russian Journal of Genetics – Springer Journals
Published: Nov 15, 2007
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