The effect of nutritional treatments on some morphological, physiological, and biochemical characteristics of Dracocephalum kotschyi Bioss.
Subject Areas : Medicinal Plants
Sudabeh Mafakheri
1
(Assistant professor, Department of Horticultural sciences engineering, Faculty of Agriculture and plant resources, Imam Khomeini International University, Qazvin. Iran.)
Rahman Hallaj
2
(Assistant Professor, Department of chemistry, Faculty of sciences, Kurdistan University, Sanandaj, Iran)
Roghayeh Aminian
3
(Assistant Professor, Department of Genetic and plant breeding, Faculty of Agriculture and plant Resources, Imam Khomeini International University, Qazvin, Iran.)
Keywords: Essential oil, Vermicompost, Biophosphate, Dracocephalum kotschyi Bioss, Limonene, Nutritional treatments,
Abstract :
In order to study the effects of applying chemical and biofertilizers on some quantitative and qualitative characteristics of Dracocephalum kotschyi Bioss., a factorial CRD experiment including 18 treatments with 4 replications, was conducted at Imam Khomeini International University research greenhouse. The treatments were: vermicompost (0, 10 and 20 V/V), phosphate biofertilizer (application and no-application) and chemical fertilizer (0, 50 and 100% of the recommended amount equal to 0, 0.48 and 0.96 gr/pot respectively).The essential oil was extracted by hydro distilation method by using a clevenger apparatus and were analyzed by GC and GC/MS. Results were showed that the maximum plant height, number of branches per plant, number of inflorescences per plant, fresh and dry weight and the highest percentage of essential oil were obtained as a result of using 20% vermicompost. Plants treated by 50% of recommended NPK+20% vermicompost showed the highest rate of photosynthesis and transpiration. The maximum nitrogen concentration in leaf tissue was obtained from applying 100% of the recommended amount of NPK+biophosphate. Applying 100% recommended NPK+20% vermicompost, resulted in higher phosphorus concentration in leaves. The highest concentration of potassium in leaves was obtained from plants treated with 20% vermicompost. 26 different compounds were identified in the essential oil among them limonene and verbenone were the main components. The highest amounts of these two compounds were obtained under 20% vermicompost treatment. According to the results vermicompost is an efficient substitute for chemical fertilizers in production of D.kotschyi.
28. Singh, M. and Ramesh, S. 2002. Response of sweet basil (Ocimum basilicum) to organic and inorganic fertilizer in semi-arid tropical conditions. Journal of Medicinal and Aromatic Plant Science, 24(4):947-950.
29. Tahami, S.M.K., Rezvani Moghaddam, P. and Jahan, M. 2010. Comparison the effect of organic and chemical fertilizers on yield and essential oil percentage of Basil (Ocimum basilicum L.). Journal of Agroecology, 2: 70-82.
30. Taiz, L. and E. Zeiger. 2000. Plant Physiology. Mashhad University Press. Pp. 379.
31. Vissani, V., Rahimzadeh, S. and Sohrabi, Y. 2012. The effect of bio fertilizers on physiological traits and essence of medicinal plant of Ocimum basilicum L. Journal of Medicinal and Aromatic Plants Research, 28(1):73-87.
32. Zaller, J.G. 2007. Vermicompost as a substitute for peat in potting media: Effects on germination, biomass allocation, yields and fruit quality of three tomato varieties. Scientica Horticulturae, 112: 191-199.
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