The effect of foliar application of jasmonic acid on Thymus daenensis Celak

Thymus daenensis subsp. daenensis is an endemic aromatic and medicinal plant of Iran; it's belonging to Lamiaceae family [1]. This subspecies generally grows in high altitudes in Zagros mountains range [2]. The Pot experiments were carried out at the Researches Centre of Medicinal Plants & Ethno-veterinary, Shahrekord, Iran in 2011, to investigate the effect of the foliar application of jasmonic acid (JA) at the rates of 0.0 (JA0) as a control, aceton (JAa) as a solvent, 50 (JA1), 100 (JA2), 200 (JA3) and 400 (JA4) µL on phytochemical essential oil of T. daenensis. The result of analysis of variance of the experiment showed that different levels of the foliar application of jasmonic acid do have significant impacts on thymol and carvacrol content. The highest amount of thymol was 100 (JA2) µL (70% essential oil), and highest amount of carvacrol was100 (JA2) µL (7% essential oil).