Bijani, Madineh (2014) Effects of different Mycorrhiza spices and Phosphorus Availability on the arsenic toxicity and Growth of fenugreek (Trigonella foenum-graecum) in Pollute soil. Masters thesis, University of Zabol.
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Abstract
Increasing use of fertilizers and chemical pesticides contaminated with heavy metals and the use of waste water for watering plants has increased concentrations of heavy metals in crops. One of the most toxic and dangerous elements to human health is arsenic. One way to reduce arsenic toxicity and prevent the absorption of these elements by plants is the use of Mycorrhiza fungi and phosphate fertilizer. In this study, the effect of different species of Mycorrhiza and phosphorus availability was examined on arsenic toxicity and fenugreek growth at contaminated soil in a pot study. The experimental design was a factorial with three Mycorrhiza species and non-inoculation comprising the first factor, three arsenic contamination; control, 15 and 30 mg of arsenic kg-1 of soil as second factor and two phosphorus availability; control and 250 mg of P kg-1 soil as third factor that were applied with three replications. The experiment was conducted in 2012 at the Zabol University green house in Zabol, south Iran. Analysis of variance indicated that Mycorrhiza hyphae expanding in the soil increased number of lateral branches, number of leaves, leaf area, stem height, shoot and root dry weight, and chlorophyll a and b and total chlorophyll, as well as carotenoids and chlorophyll index, length and volume of root, concentration of phosphorus, nitrogen, potassium and ash. In addition to, heavy metal accumulation in the Mycorrhiza hyphae and prevent its transfer to the shoots significantly reduced arsenic concentrations in symbiotic plants. Phosphorus addition to soil has similar effect with Mycorrhiza fungi inoculation. Arsenic also interferes with the absorption of nutrients in plant and reduced number of lateral branches, number of leaves, leaf area, stems height, shoot and root dry weight, and chlorophyll a and b and total, as well as carotenoids and chlorophyll index, root length and volume, the concentration of nitrogen, potassium and ash. Furthermore arsenic toxicity increased arsenic concentrations in shoots and concentration of proline and carbohydrates in the plant.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Heavy metals, Mycorrhiza fungi, Fenugreek, Phosphorus |
| Subjects: | S Agriculture > SB Plant culture |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 26 Apr 2016 07:05 |
| Last Modified: | 26 Apr 2016 07:05 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/528 |
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