The effect of putrescine foliar application on yield and essential oil of lemon beebrush(Lippia citriodora)

Mohammad Dehghan Niri¹ Anahita Rashtian² Afagh Tabanda Saravi³ Hamid Mir rokni⁴

1) Graduated from Master of Rangeland Management , Yazd University
2) 2- Assistant Professor, Faculty of Natural Resources and Desert Studies, Yazd University
3) 2- Assistant Professor, Faculty of Natural Resources and Desert Studies, Yazd University
4) Director of Medicinal Plants Center in University Jihad Center of yazd

IOI Code : XDHF-FHHEF
Publication : Conservation of Natural Resources & Environment(envprouma.ir/3rd)
Abstract :
    Due to the high importance of medicinal plants and the growing need for medicinal plants and their products in this study, the effects of polyamine putrescine on the essential oil and morphological traits of medicinal plants to lemon beebrush were investigated. For this purpose, concentrations of zero (control), 1 and 2 mmol / L putrescine were sprayed on lemon in three completely randomized designs in three replications. Foliar application was performed on the whole shoot of the plant 4 times with an interval of 2 weeks and the percentage of essential oil, the amount of essential oil compounds, number of leaves, leaf width, leaf length, fresh weight of biomass, dry weight of biomass were studied. The results showed that putrescine in the applied concentrations had no significant effect on the morphological traits of lemonbeebrush. Decomposition of essential oil samples of this plant showed that limonene, geranium and nral are the main constituents of the essential oil of this plant and the percentage of essential oil of this plant increased by increasing the concentration of putrescine solution by 1.6 and 2.1%, respectively. Concentration decreased compared to the control.

Keywords : putrescine lemon beebrush essential oil morphology