Document Type : Research Paper
Authors
1 Assistant Professor, Department of Plant Production, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous
2 M.Sc. in Weed Science, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous
3 Associate Professor, Department of Plant Production, Faculty of Agriculture and Natural Resources, Gonbad-e Kavous University, Gonbad-e Kavous
4 Instructor, Department of Biology, Faculty of Basic Sciences, Gonbad Kavous University, Gonbad Kavous
Abstract
The purpose of this study was eavaluation of morphological and biochemical haracteristics of rice seedlings–Domsia cultivar to various concentrations (0, 0.024, 0.048, 0.076 and 0.1 mM) of extracted phenolic compounds of barnyard grass (Echino crus-galli (L.) Beauv). The experiment was performed based on a completely randomized design in three replications in hydroponic culture. Methanol was used to extraction of the phenolic compounds. In other experiment, different concentrations of hydroxyl benzene synthesis (0, 1.514, 3.054, 4.569 and 6.136 mM) also was applied on this cultivar. According to the results, effects of different concentrations of phenolic compounds of barnyard grass on charactristics of root length, width of largest leaf, relative water content of leaf, protein and total phenols of rice seedlings were significant at 5% probability level. So that, the extent of negative impact on these traits were increased with increasing concentrations of phenolic compouds of barntyard grass in comparison with control. The greatest reduction of these traits was related to 0.1 Mm of phenolic compounds concentration, although there was no significant difference between this treatment and some treatments. According to the results, significant reduction effect of synthetic phenolic compounds concentrations on studied traits in addition to leaf area in plant and content of chlorophyll a, b and total especially at higher concentrations was more than treatments of its natral concentrations in barnyard grass. Due to the observed negative impact of phenolic compounds of barntyardgrass on rice seedlings–Domsia cultivar and also exstance of considerable amount of aromatic groups of benzene derivatives such
Keywords
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