Seasonal influence on the essential oil variability of Eugenia dysenterica
Carregando...
Data
2009
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
The chemical composition of the essential oils of cultivated Eugenia dysenterica populations,
which originated from seeds obtained from two different sites and harvested during summer and
winter, have indicated the presence of two oil clusters related to seed origin and season. Cluster
I included only samples which originated from seeds from Senador Canedo (SC) collected
during winter (subcluster IA) and with high percentages of β-pinene (6.6-14%), α-pinene
(5.9-13%), and (Z)-β-ocimene (0-13%), or samples collected mainly in the summer (subcluster
IB) and characterized by high contents of γ-cadinene (0-33%), limonene (1.2-28%), and β-pinene
(3.2-23%). Cluster II included all the samples cultivated from seeds originating from Campo Alegre
de Goiás (CA) regardless of the season, which were characterized by high amounts of β-caryophyllene
(15-74%), δ-cadinene (0-24%), and α-copaene (0-14%). The canonical correlation between
populations and seasons revealed that α-pinene, (Z)-β-ocimene, (E)-β-ocimene, and γ-cadinene
present a strong correlation with the cold and dry winter (subcluster IA), whereas β-caryophyllene,
temperature, and precipitation were related to samples from CA seed origin during the hot and humid
summer (cluster II). Sesquiterpene hydrocarbons predominated in all the sampled populations
and the observed essential oil chemovariation might be genetically determined by seed origin, in
addition to a clear seasonal influence shown only in the samples from SC seeds.
Descrição
Palavras-chave
Eugenia dysenterica, Myrtaceae, Eessential oil, Chemical variability, Multivariate analysis, Seasonal influence
Citação
DUARTE, Alessandra R. et al. Seasonal influence on the essential oil variability of Eugenia dysenterica. Journal of the Brazilian Chemical Society, São Paulo, v. 20, n. 5, p. 967-974, 2009.