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Journal of Medicinal Plants and By-products، جلد ۶، شماره ۱، صفحات ۷۱-۷۹
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عنوان انگلیسی Allelopathy Effects of Trifolium alexandrium L. on Germination and Nutrient Uptake in Medicinal Plant Peganum harmala L.
چکیده انگلیسی مقاله The present study focused on effects of Trifolium alexandrium L. extract (0.002, 0.004 and control) which is a fast-growing plant on germination, growth and nutrients uptake of medicinal plant Peganum harmala L. Results revealed that T. alexandrium extract had significant (P< 0.01).effect on seed germination of P. harmala The maximum (54%) and minimum (28%) seed germination were observed at 0.002 and 0.004 treatments, respectively. The highest radical (11.27 mm) and pedicle (19.10 mm) lengths were obtained in the 0.002 treatment, and the minimum radical (4.05 mm) and pedicle (9.40 mm) length were related to 0.004 treatment. With increased extract concentration, dry weight of P. harmala decreased. Also, the maximum (15.79 mg g-1 fresh weight) and minimum (6.94 mg g-1 fresh weight) chlorophyll contents of P. harmala were observed at 0.002 and control treatments, respectively. The highest (6.08 mg g-1 fresh weight) and lowest (4.34 mg g-1 fresh weight) chlorophyll b and also the highest (4.89 mg g-1 fresh weight) and lowest (2.69 mg g-1 fresh weight) carotenoids contents were obtained in 0.002 and 0.004 treatments, respectively. Furthermore, T. alexandrinum extract had significant effects on the uptake of N, P, K, Zn and Mn. The maximum amount of N uptake (3.77%) was observed in the extract concentration of 0.002. The maximum (0.3%) and minimum (0.21%) P uptake was observed in the control and 0.004 treatments, respectively. With increasing the extract concentration K uptake was decreased. The maximum (0.22 and 0.19%, respectively) and minimum (0.14 and 0.15%, respectively) Zn and Mn uptake were observed in the control and 0.004 treatments, respectively. In general, results showed that high concentration of T. alexandrium extract has deterrent effects on seed germination and growth of P. harmala, so that lower concentration of extract, showed positive effect on seed germination plant growth.
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نشانی اینترنتی http://jmpb.areeo.ac.ir/article_113152_d3fa4132149c85e8daafb0e2d01341ce.pdf
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