Evaluation of allelopathic effect of Rosa damascena Mill Boukan and Khansar accessions extract on seed germination of wheat Zarrin Cultivar
Allelopathy refers to the interaction of plants with their released chemicals on each other. Allelopathic compounds play an important role in biodiversity and the ability to produce ecosystems.In order to investigate the effects of allelopathy on Rosa damascena Mill on germination of wheat (Triticum aestivum L.) seeds. The experiment was done as factorial based on completely randomized design with three replications. The distilled water treatments used as control and different concentrations (0, 1, 2, 3, 4 and 5%) of aqueous extract of dried Rosa flowers used as treatments. Rosa flowers were from Boukan and Khansar, the designwere completely randomized in three replications. The results of this experiment showed that the juice extract with the mentioned concentrations did not reduce germination as compared to the control.The aqueous extract of Boukan showed a significant decrease in plumulelength, radiclelength, plumuledry weight, radicledry weight, and soluble protein content in wheat. Also, the extract of Khansar showed the highest inhibitory effect on plumule fresh weight, radicle fresh weight and soluble sugar content on the wheat plant.The analysis of variance showed that the difference between the extracts, treatments and extract × treatment was significant (P <0.05). There was a significant correlation (P <0.05) between fresh weight, dry weightand length, as well as protein and sugar content in both plants.
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