Evaluation of Growth, Essential Oil Content and Composition in Four Thyme Species under Dryland Farming System in Zagheh, Rangeland, Khoramabad, Iran
سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 71
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شناسه ملی سند علمی:
JR_JJMPB-10-1_007
تاریخ نمایه سازی: 6 آذر 1402
چکیده مقاله:
In order to study the variation of four thyme species for aerial parts biomass, essential oil content and composition, a study was carried out in Zagheh, Rangeland, Khoramabad, Iran. Seeds of four species of Thymus pubescens Boiss. & Kotschy ex Celak., Thymus daenensis Celak. Thymus daenensis subsp. lancifolius (Celak.) Jalas and Thymus kotschyanus Boiss. & Hohen. were collected from their natural habitat in Lourestan province, Iran. Seeds sown in Jiffy pots in glasshouse in September ۲۰۱۶ and the seedlings were transferred to the field in October ۲۰۱۶ using Randomized Complete Block Design (RCBD) with ۳ replications. Each unit of the experiment consists of ۴۰ plants in two rows with ۵۰ cm distance between rows and ۵۰ cm between plants within rows. Data were collected for aerial parts biomass, morphological traits and essential oil percentages over two years ۲۰۱۷-۲۰۱۸. The essential oils of all samples were obtained by hydro-distillation, in flowering stage and the essential oil components were identified using gas chromatography (GC) and gas chromatography/mass spectrometry (GC-MS). Considerable variation was found between species for fresh and dry weight of aerial parts biomass, plant height, root length and essential oil content. The mean values of aerial parts biomass, crown diameter and essential oil in T. daenensis were higher than other species. For the root length, the higher value was obtained in T. pubescens. The lower and higher essential oil content with average values of ۱.۵۳% and ۱.۹۵% were obtained in T. pubescens and T. daenensis subsp. lancifolius, respectively. The results indicated that the major components in the essential oil were carvacrol (۵.۸, ۱۸.۵, ۴۲.۴ and ۳۳.۵%) and thymol (۷۸.۹, ۵۱.۹, ۳۶.۱۹ and ۴۲.۷%) for T. daenensis, T. kotschyanus, T. daenensis subsp. lancifolius and T. pubescens, respectively.
کلیدواژه ها:
نویسندگان
Ali Sepavand
Department of Horticulture, Islamic Azad University, Science and Research Branch, Tehran, Iran
Ali Ashraf Jafari
Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran
Fatemeh Sefidkon
Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran
Sepideh Kalatejari
Department of Horticulture, Islamic Azad University, Science and Research Branch, Tehran, Iran
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