Volume 14, Issue 53 (fall 2010)
jwss 2010, 14(53): 145-154 |
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A. Shariat, M. H. Assareh, A. Ghamari-Zare. Effects of Cadmium on Some Physiological Characteristics of Eucalyptus occidentalis . jwss 2010; 14 (53) :145-154
URL: http://jstnar.iut.ac.ir/article-1-1340-en.html
URL: http://jstnar.iut.ac.ir/article-1-1340-en.html
, shariat@rifr-ac.ir
Abstract: (30511 Views)
Heavy metals including cadmium produced as a result of urban, industrial and agricultural activities lead to the water pollution. Also, considering the growing need for silviculture in Iran, it is necessary to conduct a comprehensive research on fast growing and evergreen species of Eucalyptus and their role in heavy metals' absorption. To achieve this goal, Eucalyptus occidentalis seedlings were grown in pots containing silica and irrigated with a mixture of nutrient solution and cadmium chloride in 5, 10 and 15 m M for 10 months. Root and leaf samples were harvested and the amount of cadmium in stem, root and leaf organs was measured. Also, some morphological and physiological characteristics were determined including soluble sugar and praline. The analysis indicated that the cadmium concentrations of 15 mM treatment in the root, leaf and stem were 585, 142 and 87 mg/kg D.W., respectively. Proline content increased with the increase of Cadmium concentration while the content of pigments decreased. The result of this research shows that eucalypt has the potential of cadmium accumulation without any serious damage to its growth. Therefore, the plant can be used to decrease the environmental pollutions.
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