الفهرس | Only 14 pages are availabe for public view |
Abstract Moringa oleifera grown in the laboratory and greenhouse was studied under drought stress induced by different concentrations of PEG 6000 to investigate the plant. The main goal of this study was to investigate the adverse effects of drought stress on Vegetative growth, phytochemical compounds, and some enzymatic activities of M. oleifera. The metabolic activity of the plant gives the plant its edible and medical importance. Using PEG as a chemical treatment was investigated. In the laboratory, different concentrations of PEG were used (0, 5, 10, 15, 20, 25 and 30%) in the first experiment but in the second experiment, different concentrations of PEG were used (0, 5, 10, 15, 20, 25, 30, 35, 40 %) and in the greenhouse were done with (0, 5, 15, 25, 35, 45 %) PEG. The results revealed that the seed germination percentage was enhanced at low PEG concentration but it was decreased at high concentrations of PEG. Measurements of growth criteria of the growing M. oleifera under the chosen PEG levels in green house showed remarkable variation in growth response to stress at the vegetative growth stage of the plant. Measurements of metabolic profile in the plant such as phytochemical compounds, and some enzymatic activities varied significantly by PEG stress. Significant differences were detected in qualitative and quantitative analysis of some phenolic and flavonoid compounds by HPLC technique. The study suggested growing the plant in dry soil where drought stress exists and most crops are not produced economically. |