In collaboration with Scientific Association of Iranian Medicinal Plants

Document Type : Research Paper

Author

Research Center for Medicinal Plants, Spices and Aromatics, Faculty of Agriculture, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran

Abstract

Due to the valuable role of savory (Satureja spp.) in pharmaceutical and food industries, three separate factorial experiments were conducted in a completely randomized design with four replications in Islamic Azad University, Branch of Shahrekord in the 2021-2022 crop year to study the effects of NPK, butamisol, and humic acid fertilizers on the morphophysiological characteristics and essential oil of three savory species (S. bachtiarica Bunge, S. mutica Fisch. & C. A. Mey., and S. khuzistanica Jamzad) under drought stress conditions. Experimental treatments included non-use (A1) and use (A2) of NPK, non-use (B1) and use (B2) of humic acid, non-use (C1) and use (C2) of botamisol, and drought stress at three levels of field capacity (D1), and 50% (D2) and 75% (D3) moisture loss. The A2B2C2D1 treatment resulted in the highest plant height (57.5±1.1 cm), number of main branches (23.4±1.7), total chlorophyll (1.55±0.02 mg.g-1 FW), and essential oil content (1.94±0.03%) in S. bachtiarica. The highest proline (13.99±1.2 µg.g-1 FW) and lowest essential oil (0.79±0.02%) amounts was obtained in S. mutica in the A1B1C1D3 treatment. From the 11 essential oil compounds, monoterpenoids such as ρ-cymene and carvacrol in S. bachtiarica, carvacrol and ɣ-terpinene in S. khuzistanica, and ρ-cymene and thymol in S. mutica were identified as major essential oil constituents. Better nutrition and minimum stress with temperate climate of the region under study led to the introduction of S. bachtiarica as the best species.

Keywords

Main Subjects

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