Document Details
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Document Type |
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Thesis |
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Document Title |
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ENHANCING THE PHYTOEXTRACTION CAPACITY OF TWO ORNAMENTAL PLANTS BY ORGANIC FERTILIZER IN LEAD AND ALUMINUM CONTAMINATED SOIL تعزيز القدرة على الاستخلاص النباتي في نوعين من نباتات الزينة باستخدام الأسمدة العضوية في التربه الملوثة بالرصاص والألمونيوم |
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Subject |
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Faculty of Science |
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Document Language |
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Arabic |
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Abstract |
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Heavy metal deposition in soil is a serious environmental issue throughout the world, and it is primarily caused by anthropogenic activity. As a result, novel approaches to developing cost-effective and environmentally friendly methods to clean up the soil in the environment are urgently needed. Phytoextraction, which refers to the use of ornamental plants to clean up toxic elements, has gained a lot of interest in recent times. Aluminium (Al) and lead (Pb) are two heavy metals found in soil that pose a major health danger due to their aggregation in plants' vegetative organs. The goal of the present study is to measure the morphological and physiological responses of two ornamental plants such as Bougainvillea spectabilis and Zinnia elegans in response to Al and Pb under organic fertilizer treatments (5%). Organic fertilizer with element (5%) was applied to both ornamental plants under three separate Al and Pb treatments: T1, concentration of heavy metal 100 mg/Kg; T2, concentration of heavy metal 200 mg/Kg; T3, concentration of heavy metal 300 mg/Kg. Our findings demonstrated that Al and Pb decreased the plant height, the number of leaves on each plant, the leaf area, as well as their fresh and dry weights of both ornamental plants. However, organic fertilizer (5%) with element significantly (p≤ 0.05) increased the growth conditions of both ornamental plants. Furthermore, Al and Pb decreased the physiological parameters of both species including stomatal conductance (Gs), transpiration (E), chlorophyll fluorescence (FV/FM), chlorophyll content; however, organic fertilizer (5%) with element significantly (p≤ 0.05) improved these parameters. Conversely, organic fertilizer treatment (5%) with element (OF+E) treatment significantly (P ≤ 0.001) increased translocation factor (TF) by 59%, 58%, 65% and 70%, 69%, 75% in B. spectabilis and in Z. elegans by 43%, 38%, 32% and 68%, 72%, 62%, respectively, under Al and Pb treatments, relative to with respect to those in control plants. The accumulation of Al and Pb in the shoot and roots of both species were increased as their concentrations were raised to higher levels. Overall, the study found that organic fertilizer (5%) with element improved the morphological and physiological conditions of plants, which assisted phytoextraction ability.
Key words: Phytoextraction, Aluminium (Al), lead (Pb), ornamental plants, heavy metal stress tolerance. |
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Supervisor |
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Dr. Hamid Ali Al-Samdani |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1444 AH
2023 AD |
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Added Date |
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Monday, April 17, 2023 |
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Researchers
| أمل يحي الزهراني | Alzahrani, Amal Yahya | Researcher | Master | |
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