title: Water deficit and seasonality study on essential oil constituents of Lippia gracilis Schauer germplasm.
abstract: The aim of this study was to analyze the chemical composition of the essential oil from leaves of Lippia gracilis genotypes, in the dry and rainy seasons, and with and without irrigation. The extraction of essential oil was realized by hydrodistillation in a Clevenger apparatus. The chemical composition analysis was performed using a GC-MS/FID. The leaves of the L. gracilis genotypes provide essential oil with content between 1.25% and 1.92% in the rainy season and 1.42% and 2.70% in the dry season; when irrigation was used the content was between 1.42% and 2.87%, without irrigation contents were between 1.60% and 3.00%. The chemical composition of L. gracilis showed high levels of terpenes. The major constituent of genotypes LGRA-106 was thymol and carvacrol was the major constituent for the other genotypes. Concentrations showed little variation between seasons, demonstrating the stability of the chemical composition of L. gracilis even with different climatic conditions.
authors.affiliation: Department of Agronomic Engineering, Federal University of Sergipe, Avenue Marechal Rondon s/n, 49100-000 São Cristóvão, SE, Brazil.
authors.forename: Elizangela Mércia de Oliveira
authors.initials: EM
authors.lastname: Cruz
authors.affiliation: Department of Agronomic Engineering, Federal University of Sergipe, Avenue Marechal Rondon s/n, 49100-000 São Cristóvão, SE, Brazil.
authors.forename: Jéssika Andreza Oliveira
authors.initials: JA
authors.lastname: Pinto
authors.affiliation: Department of Agronomic Engineering, Federal University of Sergipe, Avenue Marechal Rondon s/n, 49100-000 São Cristóvão, SE, Brazil.
authors.forename: Saymo Santos
authors.initials: SS
authors.lastname: Fontes
authors.affiliation: Department of Agronomic Engineering, Federal University of Sergipe, Avenue Marechal Rondon s/n, 49100-000 São Cristóvão, SE, Brazil.
authors.forename: Maria de Fátima
authors.initials: Mde F
authors.lastname: Arrigoni-Blank
authors.affiliation: Department of Agronomic Engineering, Federal University of Sergipe, Avenue Marechal Rondon s/n, 49100-000 São Cristóvão, SE, Brazil.
authors.forename: Leandro
authors.initials: L
authors.lastname: Bacci
authors.affiliation: Department of Chemistry, Federal University of Sergipe, Avenue Marechal Rondon s/n, 49100-000 São Cristóvão, SE, Brazil.
authors.forename: Hugo César Ramos
authors.initials: HC
authors.lastname: de Jesus
authors.affiliation: Department of Chemistry, Federal University of Sergipe, Avenue Marechal Rondon s/n, 49100-000 São Cristóvão, SE, Brazil.
authors.forename: Darlisson de Alexandria
authors.initials: Dde A
authors.lastname: Santos
authors.affiliation: Department of Chemistry, Federal University of Sergipe, Avenue Marechal Rondon s/n, 49100-000 São Cristóvão, SE, Brazil.
authors.forename: Péricles Barreto
authors.initials: PB
authors.lastname: Alves
authors.affiliation: Department of Agronomic Engineering, Federal University of Sergipe, Avenue Marechal Rondon s/n, 49100-000 São Cristóvão, SE, Brazil.
authors.forename: Arie Fitzgerald
authors.initials: AF
authors.lastname: Blank
mesh_terms: D001938:Brazil; D000081007:Cymenes; D055864:Droughts; D032411:Lippia / Q000737:chemistry*; D039821:Monoterpenes / Q000737:chemistry* / Q000302:isolation & purification; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry* / Q000302:isolation & purification; D011891:Rain; D012621:Seasons; D013943:Thymol / Q000737:chemistry* / Q000302:isolation & purification; D014867:Water
chemical_list: D000081007:Cymenes; D039821:Monoterpenes; D009822:Oils, Volatile; D010938:Plant Oils; D014867:Water; D013943:Thymol; C073316:carvacrol