title: Intraspecific variability of the essential oil of Ziziphora clinopodioides ssp. rigida from Iran.
abstract: Hydrodistillated essential oils of Ziziphora clinopodioides ssp. rigida from nine populations of the Lashgardar protected region (Hamedan Province, Iran) were analyzed by using GC and GC/MS techniques to determine the intraspecific chemical variability. Altogether, 39 compounds were identified in the oils, and a relatively high variation in their contents was found. The main constituents of the essential oils were pulegone (0.7-44.5%), 1,8-cineole (2.1-26.0%), neomenthol (2.5-22.5%), 4-terpineol (0.0-9.9%), 1-terpineol (0.0-13.2%), neomenthyl acetate (0.0-7.1%), and piperitenone (0.0-5.4%). For the determination of the chemotypes and the intraspecific chemical variability, the essential oil components were subjected to cluster analysis (CA). The five different chemotypes characterized were Chemotype I (pulegone/neomenthol), Chemotype II (pulegone), Chemotype III (pulegone/1,8-cineole), Chemotype IV (neomenthol), and Chemotype V (1,8-cineole/4-terpineol).
authors.affiliation: Department of Biology, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G. C., Evin, 1983963113, Tehran, Iran. a-sonboli@sbu.ac.ir
authors.forename: Ali
authors.initials: A
authors.lastname: Sonboli
authors.forename: Morteza
authors.initials: M
authors.lastname: Atri
authors.forename: Sedighe
authors.initials: S
authors.lastname: Shafiei
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry; D007492:Iran; D019686:Lamiaceae / Q000737:chemistry*; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D009822:Oils, Volatile