Related Experiment Video
Updated: Nov 14, 2025

Field Identification of Matricaria chamomilla using a Portable qPCR System
Published on: October 10, 2020
Chemovariations in Hypenia essential oils under infrageneric and phenological influences
Camila Fernandes de Jesus1, Maria Tereza Faria2, Heleno Dias Ferreira3
1Universidade Federal de Goiás, Instituto de Química, Goiânia, Brazil.
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.
More Related Videos
Related Concept Videos
Aromatic Compounds: Overview
In 1825, Faraday isolated...
Morphogenesis
Pollination and Flower Structure
Biological Clocks and Seasonal Responses

