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The volatile leaf oils of eucalyptus ovata and eucalyptus brookerana myrtaceae


Australian Journal of Botany 29(5): 605-616
The volatile leaf oils of eucalyptus ovata and eucalyptus brookerana myrtaceae
The volatile leaf oils of 27 individual trees of E. brookerana A. M. Gray chosen throughout the species' distribution and of 13 trees of E. ovata Labill. from 3 different sites were analyzed by capillary GLC. The oils of E. brookerana were qualitatively fairly simple and almost entirely monoterpenoid in nature. The oils of E. ovata were more complex and characterized by comparatively large amounts of sesquiterpenoid alcohols. A computer analysis using programs MULCLAS, GROUPER, GOWER and GOWECOR resulted basically in the separation of an E. brookerana group and an E. ovata group, although some trees sampled as E. brookerana fell into the latter group with these analyses. Further interpretation of the oils yielded by the anomalous trees suggested that their chemical affinity with E. ovata was superficial and that they were correctly attributed to E. brookerana. The taxonomic implications of volatile leaf oil constituents in Eucalyptus are discussed in respect of these 2 spp. and of several other pairs of species.


Accession: 006792915



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