02260nas a2200277   4500008004100000245006500041210006100106260026900167300001400436490000700450520121500457653001401672653001501686653003001701653001401731653002401745653001301769653001001782653001101792653002001803100001601823700001601839700001401855700001601869856009701885       1999                        eng d00aThe selection of Thymus vulgaris cultivars to grow in Canada0 aselection of Thymus vulgaris cultivars to grow in Canada  aAffiliation: Horticultural Research Centre, Department of Plant Science, Fac. of Agric. and Food Laval Univ., Qué., G1K 7P4, Canada; Affiliation: Institute of Pharmaceutical Biology, Philipps University of Marburg, Deutschhauserstr. 17A, Germany; Affilic1999///  a337 - 3420 v113 aFive different cultivars of Thymus vulgaris originating from various geographical sources (Canada, Germany, former GDR and Spain) were organically cultivated in the fields in Quebec, Canada. The oils obtained through steam distillation of the dried leaves from each cultivar varied from 1.38% to 2.04%, depending on the cultivar used. The highest oil content was obtained from cv "Madrid" followed by "RH-1" and "Laval-1." More than 95% of the oil, with a total of approximately 22 components were identified in the samples. Oxygenated monoterpenes were the main group of constituents in all cultivars. Cultivar "Laval-1," recently developed in Quebec, "Madrid" from Spain and "RH-1 " from Germany were established to belong to thymol-chemotypes. Cultivar "QDLB" characterized by its content of thymol (approximately 39%), carvacrol (17%) and linalool (3.5%), in the oil, was also found to belong to "thymor-chemotypes, while "RH-2" with carvacrol (40%) was found to be a carvacrol-chemotype. Though none of the cultivars had the desired levels of linalool content, "Laval-1" and "RH-1" were found to be prospective cultivars for field commercial organic cultivation in Canada. © 1999 Allured Publishing Corp.10aCarvacrol10aChemotypes10aEssential oil composition10aLamiaceae10aOrganic cultivation10aP-cymene10aThyme10aThymol10aThymus vulgaris1 aLetchamo, W1 aGosselin, A1 aHoelzl, J1 aMarquard, R  uhttp://www.scopus.com/scopus/inward/record.url?eid=2-s2.0-0347421484&partnerID=40&rel=R6.5.0