
%0 Journal Article
%A Steane, D. A. 
%A Byrne, M. 
%A Vaillancourt, R. E. 
%A Potts, B. M. 
%T Chloroplast DNA polymorphism signals complex interspecific interactions in <emph type="2">Eucalyptus</emph> (Myrtaceae)
%J Australian Systematic Botany
%D 1998/03/31
%V 11
%N 1
%P 25-40
%K 
%R https://doi.org/10.1071/SB96028
%U https://www.publish.csiro.au/paper/SB96028 
%X Variation in the chloroplast genome of 44 accessions representing 14 Eucalyptus L'H&eacute;r. species from the series Viminales (sensu Pryor and Johnson 1971) was investigated. Southern analysis of the chloroplast genomes restricted with 12 enzymes revealed 20 restriction-site polymorphisms of which 7 were autapomorphic to individual trees. The 13 informative restriction-site polymorphisms were distributed between individuals of different species, but none was species-specific. Fourteen chloroplast haplotypes were identified for south-eastern Australian individuals. In endemic Tasmanian species, five haplotypes were identified. Chloroplast haplotypes appear to have a mosaic distribution in south-eastern Australia, more closely associated with geographical regions than with morphological species boundaries. The biogeographic distribution of chloroplast haplotypes may be explained by a combination of interspecific hybridisation and introgression, and convergent evolution. The lack of species-specificity of cpDNA variation indicates that, although cpDNA is not appropriate for species-level phylogeny analysis in the series Viminales, it may provide useful information in studies of biogeography and gene flow in Eucalyptus. 
