ABSTRACT
Background: lippia citriodora H.B.K is an important medicinal and aromatic plant from the Verbenaceae family
Objective: The aim of this study was to investigation of essential oil percentage, E-citral [geranial] content and morphophysiological changes of Lippia citriodora in response to induction of bioactive compounds and plant growth regulators
Methods: this study has been conducted on the base of factorial experiment in randomized complete block design [RCBD] with 3 replications. The first factor included the application of bioregulators at four levels that were distilled water, 50 ppm gibberellic acid [GA[3]] + 50 ppm IBA, 50 ppm GA[3] + 100 ppm IBA and 100 ppm GA[3] + 50 ppm IBA. The second factor was chitosan inductions at two levels: distilled water and 400 ppm chitosan. The third factor was methanol induction at two levels: distilled water and 5% v/v methanol
Results: the measured traits were significantly affected [P
Conclusion: generally, the interaction of foliar application of plant growth regulators, methanol and chitosan could be positively effect on essential oil, E-citral [geranial] content and morpho-physiological traits