Mississippi State University
Richard L. Harkess
Date of Degree
Original embargo terms
Dissertation - Open Access
Doctor of Philosophy
College of Agriculture and Life Sciences
Department of Plant and Soil Sciences
Lavender is an important medicinal plant that is sensitive to various environmental factors. Lavender essential oils have been shown to improve human health in response to many diseases. Lavender is grown all over the world, which indicates its ability to adapt to different climates. There are no reports of its commercial cultivation in Mississippi. It has been proven that there are many factors that directly affect the plant growth and concentration of essential oils in lavender. Studying these factors that affect plant growth and essential oils will be beneficial for lavender producers. The aim of this study is to increase the production of essential oil through cultural techniques and analyze the active compounds of three Lavandula species (L. intermedia, L. angustifolia, L. stoechas) using HPLC (High performance liquid chromatography) and GC-MS (Gas Chromatography, Mass spectrometer) technology. Applications of gibberellic acid, iron chelate, Mycorrhizae, humic acid, DAP, and potash fertilizer were studied to promote plant growth and production of essential oils. The essential oils were extracted using a Soxhlet distillation. The quantity and quality of the essential oils was also evaluated using HPLC and GC-MS. The linalool, linalyl acetate, and other compounds from Lavandula may be considered natural raw material source for pharmaceuticals and cosmetic products. These vital components of the essential oil of lavender leaves, flowers, and stems (linalool, linalyl, and other compounds) were affected by chelated iron treatments, gibberellin, humic acid, and mycorrhizae. The essential oil compounds of L. angustifolia and L. x intermedia cultivars make them worth cultivating.
AL-Garallaa, Keefah, "Phytochemical and biological strategies to improve essential oils content in lavender" (2021). Theses and Dissertations. 5228.