Abstract
Eucalyptus kochii ssp. kochii,
ssp. plenissima and E. horistes
are planted for eucalypt oil production and land rehabilitation in Western
Australia. Variation in cpDNA was investigated by RFLP analysis of 10
populations across the distribution of the three taxa. Diversity in the
chloroplast genome was high, with most of the diversity distributed between
populations. The three taxa formed a cohesive group that was clearly
differentiated from E. oleosa, which was used as an
outgroup. There was some differentiation of E. kochii
ssp. kochii from E. kochii ssp.
plenissima and E. horistes.
Several mutations specific to the E. kochii ssp.
kochii, ssp. plenissima and
E. horistes haplotypes were present in a variant of
E. oleosa, suggesting that introgression has occurred.
Congruence between cp gene genealogy and geographic distribution was
consistent with limited maternal gene flow between populations. There was
little structuring of haplotype diversity and the pattern of variation in the
cp genome was congruent with that previously detected in the nuclear genome.
Subject
Plant Science,Ecology, Evolution, Behavior and Systematics
Cited by
42 articles.
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