Genetic-variability within and between populations of 2 species of racopilum (racopilaceae, bryopsida)

de Vries, A., van Zanten, B. O. & van Dijk, H., 1983, In : Lindbergia. 9, 2, p. 73-80 8 p.

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  • Albrecht de Vries
  • Bernard O van Zanten
  • Henk van Dijk
Genetic variability in three populations of Racopilum spectabile and two populations of R. cuspidigerum was estimated by horizontal polyacrylamide electrophoresis. Eight of 22 tested enzyme systems were scorable; they represented 10 loci. The fraction of polymorphic loci in the most variable populations was 0.64 in R. spectabile and 0.55 in R. cuspidigerum. Estimates of gene diversity were 0.26 for both species, which is a high level of genetic variability compared with phanerogams. The genetic distance was positively correlated with spatial distance. Differences in allozyme frequencies between R. cuspidigerum and R. spectabile were considerably larger than differences within each species. One of the populations of R. cuspidigerum lacked genetic variability, which might be caused by asexual propagation. Maintenance of genetic variation within and origin of differentiation between populations are discussed. Our results reinforce the view that the diplohaplontic Bryophytina possess an evolutionary potential comparable with that of phanerogams
Original languageEnglish
Pages (from-to)73-80
Number of pages8
Issue number2
Publication statusPublished - 1983

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