Patterns of genetic diversity in Australian tree species

  • G. F. Moran
Part of the Forestry Sciences book series (FOSC, volume 42)


Australia has a large endemic tree flora with many of the genera largely confined to the southern hemisphere. The two dominant genera are Eucalyptus and Acacia. Isozyme studies of patterns of genetic diversity in populations of these species are reviewed. Generally, Australian tree species have high levels of allozyme variation with most of this variation within rather than between populations. The species with the most genetic differentiation between populations are those with regional distributions but with small disjunct populations. Many of the species show no discernible relationship between current population sizes and genetic diversity. A number of species with widespread distributions exhibit similar clusters of populations both on isozymes and other traits. Such clusters often correspond to large geographic regions. This pattern suggests that preliminary low intensity isozyme surveys could help to define more efficient sampling strategies for intensive seed collections and subsequent fieldtrials of many tree species.

Key words

isozymes conservation geographic range domestication breeding systems 


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Copyright information

© Springer Science+Business Media Dordrecht 1992

Authors and Affiliations

  • G. F. Moran
    • 1
  1. 1.Division of Forestry and Forest ProductsCSIROCanberraAustralia

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