Document Type : Original Article
Authors
1
Master student, Horticultural Science and Engineering, Orientation of Medicinal Plants, Faculty of ‎Agriculture, University of Tabriz, Tabriz, Iran.‎
2
Assistant professor, Department of Range and Watershed Management, Faculty of Agriculture and ‎Natural Resources, Urmia University, Urmia, Iran.‎
3
Assistant professor,;Ahar Faculty of Agriculture and Natural Resources, University of Tabriz, Ahar, Iran.
Abstract
Allelopathy is one of the methods of interspecific communication in plant communities, the study of which can help to understand the interactions of plants. Therefore, this study was conducted to investigate the effect of allelopathy, antioxidant properties, phenolic and flavonoid compounds of different concentrations of Achillea wilhelmsii and Salvia officinalis L. extract on the germination characteristics of two species of Onobrychis viciifolia and Medicago sativa in a completely randomized design with 9 treatments, and 5 repetitions were performed in 2018. Measured parameters included percentage and germination rate, root length, stem and seedling length, mean germination time, allometric coefficient, seed vigor index and seedling fresh and dry weight. The results of one-way analysis of variance showed that different concentrations of the mentioned extracts had a significant inhibitory effect on germination parameters of O.viciifolia and M.sativa. Also, the results of the mean comparison index showed that increasing the concentration of extracts significantly reduced the studied parameters, so that the highest percentage of decrease was observed in the highest concentration of aqueous extract, which can be the reason is the increase in allelopathic substances and consequently the increase in toxicity on the traits.
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