Investigation of physiological characteristics of Thymus vulgaris L. under water stress conditions and fertilizer
محل انتشار: سومین کنگره بین المللی و چهارمین همایش ملی زیست فناوری گیاهان دارویی و قارچهای کوهی (مجازی)
سال انتشار: 1400
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 282
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شناسه ملی سند علمی:
BMPM04_010
تاریخ نمایه سازی: 22 آذر 1400
چکیده مقاله:
In order to investigate the effect of organic fertilizers on quantitative and qualitative properties of Thyme plant under stress conditions, A factorial experiment in the ۲۰۱۹-۲۰۲۰ based on a Randomized Complete Block Design with ۱۲ treatments at the research farm of the Faculty of Agriculture, Urmia University and three replications was conducted with two factors assigned: The first factor was irrigation regime in three levels of ۶۰, ۹۰, and ۱۲۰ mm of evaporation from Class A pan as well-watered, mild, and severe stress, respectively, and the second factor: the application of organic fertilizers at sowing time at four levels of vermicompost, compost, animal manure and control in which no fertilizer was applied. The results showed that with a delay in irrigation photosynthetic pigments and soluble sugars decreased, while the application of low water stress increased the amount of essential oil and the highest amount of essential oil (۲.۶۱±۰.۱۱%) and essential oil yield (۳.۶۸±۰.۲۲ g/m۲) were observed in moderate stress conditions. Meanwhile, the highest photosynthetic pigments and soluble sugars and the amount of essential oil and essential oil yield were obtained in the application of vermicompost. However, the highest amount of proline was obtained under severe stress conditions, while reduced proline content by an average of ۲۹% under application of vermicompost compared to the control. Water deficit decreased nutrient uptake (NPK) and relative water content, showing that Thyme was sensitive to drought, and organic fertilizers application improved nutrient uptake (NPK) and relative water content of the plant within irrigation levels. The content of total phenol, flavonoids, biological yield and seed yield of Thyme increased by ۳۳, ۲۴, ۳۸ and ۲۴% in optimal irrigation conditions and ۲۸, ۱۴, ۲۷ and ۲۱% in moderate stress conditions and ۲۵, ۱۱, ۲۲ and ۱۶% were observed in severe water stress conditions in plants treated with vermicompost compared to the control treatment respectively. Based on the results, it can be concluded that in each of the water stress levels, the use of organic fertilizer is more effective in improving the quantitative and qualitative characteristics of Thyme and it is better to increase the efficiency of agricultural products from organic inputs instead of use chemical fertilizers with the aim of reducing pollution and achieve sustainable agriculture.
کلیدواژه ها:
نویسندگان
Amir Rahimi
Assistant and Associate Professor, Faculty of Agriculture, University,Urmia, Iran.
Sina siavash Moghadam
Assistant and Associate Professor, Faculty of Agriculture, University,Urmia, Iran.