the effect of different concentrations of iaa and naa on the essential oil of chaerophyllum aureum l.

introduction & aim: plant growth regulators (pgr) have same effect as natural plant's hormones and can change the main components in plant samples. chaerophyllum aureum l. is related to apiaceae family. experimental: in this paper the qualitative and quantitative composition of the volatile oils of ‎chaerophyllum aureum l. were reported after using different concentrations of iaa and naa ‎on aerial parts of the plant at flowering time. the essence was recovered by using ‎hydro-distillation with a clevenger type apparatus and investigated by gc and gc/ms.‎ results & discussion: the main components in the control sample are: α-pinene (14.1%), β-pinene (11.2%), ‎camphene (7.3%), verbenone (2.3%), limonene (14.4%), and trans-verbenol (3.7%). the results ‎indicated that iaa will result in the percentage increase of germacrene-d and, ‎of α-humulene (about 4%) and, decrease of α-pinene and β-pinene. naa will result in the ‎production of β-bisabolene (2.5%), the increment of α-cadinol about 2 times, the diminution ‎of camphene (less than half) and of α-pinene and β-pinene too.‎