Influence of water stress on morpho-physiological and phytochemical traits in Thymus daenensis
محل انتشار: مجله تولید گیاهان، دوره: 7، شماره: 1
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 247
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شناسه ملی سند علمی:
JR_IJPPG-7-1_011
تاریخ نمایه سازی: 17 مهر 1398
چکیده مقاله:
Thymus daenensis is a medicinal plant endemic to semi-arid regions of Iran. A
field experiment using a randomized complete block design with four replications
was conducted to evaluate the effect of 20, 50 and 80% soil water depletion on
morpho-physiological traits, essential oil content and composition and water use
efficiency of T. daenensis during 2010-2011. Water stress reduced growth, herbage
production, chlorophyll and carotenoid content, while increased proline, K+,
essential oil content and irrigation water use efficiency based on essential oil yield
(IWUEeso). Thymol was the highest essential oil composition (63.3-73.5%)
followed by carvacrol (3.6-16.0%), ρ-cymene (3.8-7.4%), γ-terpinene (3.3-4.7%),
β-caryophyllene (2.8-4.0%) and borneol (1.4-3.4%), respectively. Thymol, ρ-cymene
and γ-terpinene were increased, while the other compositions decreased under
water stress. It is concluded that irrigation of T. daenensis based on 50% water
depletion should be an appropriate choice for first growing season and 80% water
depletion for the second growing season in semi-arid climatic conditions.
کلیدواژه ها:
نویسندگان
B. Bahreininejad
Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, ۸۴۱۵۶-۸۳۱۱۱, Isfahan, Iran.
J. Razmjoo
Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, ۸۴۱۵۶-۸۳۱۱۱, Isfahan, Iran.
M. Mirza
Research Institute of Forests and Rangelands, P.O. Box ۱۳۱۸۵-۱۱۶, Tehran, Iran.