Influência ambiental, especial e genética na composição química dos óleos essenciais de Eugenia dysenterica DC (Myrtaceae)
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2014-03-28
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Universidade Federal de Goiás
Resumo
The chemical composition of essential oils was used to study the spatial
structure of eight E. dysenterica populations in central Brazilian Cerrado.
Variation partitioning using spatial and environmental data sets as predictors
was highly significant and explained 8.2% and 11.1% of oil chemovariations,
respectively. The data suggested wich essential oil polymorphism was
genetically rather than environmentally determined. Furthermore, the intercept
of the multivariate Mantel autocorrelogram between the distance matrices of oil
constituents and sampling sites suggested that the populations differ chemically
whenever geographical distance exceeds 120 km. The spatial chemometric
methods using variograms and probability maps detected and characterized the
spatial chemical structure among populations, as well as the environmental
factors responsible for them. All these strategies indicated that the populations
differ chemically whenever the geographical distance exceeds 120 km, an
indicator of the minimal distance between samples required for conserving the
genetic diversity of populations. Although being scarcely used with secondary
metabolites, these methodologies may be used in a wide range of applications
in species management and may lead to an effective integration of genetic,
chemical and ecological perspectives.
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Vilela, Eliane da Costa - Influência ambiental, especial e genética na composição química dos óleos essenciais de Eugenia dysenterica DC (Myrtaceae) - 2014 - 120 f. - Tese - Programa de Pós-graduação em Química (IQ) - Universidade Federal de Goiás - Goiânia - Goiás - Brasil.