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Seasonal variation of the essential oil from two Brazilian native Aldama La Llave (Asteraceae) species Anais da ABC (AABC)
OLIVEIRA,TUANE S. DE; BOMBO,ALINE B.; OLIVEIRA,ADRIANA S.S. DE; GARCIA,VERA L.; APPEZZATO-DA-GLÓRIA,BEATRIZ.
ABSTRACT Aldama arenaria and A. robusta are morphologically similar aromatic species that have seasonal development. The yield and chemical composition of essential oils from aerial and underground vegetative organs of these species were compared to verify the production of volatile metabolites in flowering and dormant phases of development and to identify if there are unique compounds for either species. The major compound in the essential oils from A. arenaria leaves was palustrol (16.22%) and for aerial stems was limonene (15.3%), whereas limonene (11.16%) and α-pinene (19.64%) were the major compounds for leaves and aerial stems from A. robusta, respectively. The major compound for the underground organs was α-pinene, in both species and phenological...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aldama arenaria; Aldama robusta; Viguiera; Phenological phases; Terpenes; Vegetative organs.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000501899
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Palynotaxonomy of Brazilian Viguiera (Asteraceae) Species Boletín de la Sociedad
Magenta,Mara Angelina Galvão; Nunes,Alessandra De Deus; Mendonça,Cláudia Barbieri Ferreira; Gonçalves-Esteves,Vânia.
With the aim of improving inter-specific delimitation of the genus Viguiera Kunth in Brazil, a palynological analysis was undertaken with 27 taxa, representing around 77% of all occurring species. Samples were obtained from herbarium specimens and the pollen grains were analyzed through light and scanning electron microscopy. Characteristics, including the shape of the pollen grains, polar and equatorial diameter, aperture measurements, surface ornamentation and exine thickness, were registered and compared. The pollen grains were medium-sized (25 - 50 mm), isopolar and oblate spheroidal (prolate spheroidal in V. aspilioides Baker). The observed values corroborated the synonymity of some species and also highlighted certain micro-morphological differences,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Brazil; Compositae; Pollen; Taxonomy; Viguiera.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722010000200008
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