Abstract
The essential oils (EOs) of six Hypenia species that are endemic in the central Brazilian Cerrado were assessed by GC/MS and chemometric analysis. EO variations according to two taxonomic sections, combined with two phenophases (vegetative and reproductive), showed that 23.2% of total variance was explained by such predictors. Variation partitioning showed that the largest pure contribution was attributed to section (43.7%), followed by phenophase (39.3%), with 17% of joint influence. A multivariate regression tree (MRT) indicated that 13 EO constituents may be potential chemomarkers for distinguishing sections and two developmental stages in the genus.
Graphical Abstract
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Acknowledgements
We wish to thank the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for funding this research study under grant no. 401188/2016-7.
Disclosure statement
No potential conflict of interest was reported by the authors.