Comparison the leaf essential oils of the cultivated fastigiate (strict) growth forms of Cupressus sempervirens in California and Turkey

摘要

The volatile leaf oils of Cupressus sempervirens fastigiate (strict) cultivars from California, USA,and Turkey were analyzed and compared. The volatile leaf oils of cultivated fastigiate growth forms aredominated by α-pinene (27.4 - 65.7%), δ-3-carene (0.2 - 30.1%) and manoyl oxide (0.1 - 9.1%), withmoderate amounts of myrcene (2.1 - 2.6%), terpinolene (1.4 - 4.7%), α-terpinyl acetate (1.1 - 4.7%), isopimara-7,15-diene (0.3, 1.2%), isoabienol (0.9, 6.0%), and trans-totarol (0.8 - 5.5%). Cedrol was foundto be very variable, ranging from none to 7.6%. Cultivars ‘Glauca’, ‘Stricta’, ‘Tiny Tower’, and ‘Totem’were each distinct in one or a few components of their oils, but otherwise nearly identical qualitativelyand quantitatively. The slight variation in oils (in both California and Turkey cultivars) indicative thatthere have been multiple selections for the strict or fastigiate habit throughout history. No general suiteof compounds distinguished California and Turkey strict cultivars. In spite of the slight differences in theleaf volatile oils, three commercial California cultivars (‘Glauca’, ‘Tiny Tower’, and ‘Totem’) are quitedifferent in their foliage. Published on-line www.phytologia.org Phytologia 99(2): 89-94 (May 9, 2017).ISSN 030319430.