Taxonomic significance of the distribution of constituents of leaf cuticular waxes of Croton species (Euphorbiaceae).
Material type:
TextSeries: ; BioChemical Systematics and Ecology, 92, p.104106, 2020Contained works: - Pimentel, B. S
- Negri, G
- Cordeiro, I
- Motta, L. B
- Salatino, A
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Foliar epicuticular waxes of specimens of 13 Croton species native in Brazil were extracted. The fractions containing alkanes and primary alcohols were isolated by preparative thin layer chromatography. Derivatized n-primary alcohols were identified by gas chromatography (GC)coupled with mass spectrometry and n-alkanes by GC and comparison with known standards. Relative abundances were estimated by GC coupled with flame ionization detector. The distribution of constituents of both classes was analyzed by cluster analysis, using the UPGMA method and Euclidean distances. The chemical affinities among species were compared with published data of molecular phylogenetic relationships. The distribution of n-alkanes and primary alcohols were shown to be useful markers of Croton species. Primary alcohols were more consistent than n-alkanes for species fingerprinting.
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