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Title

INVESTIGATION OF UPTAKE AND ACCUMULATION OF ZINC IN MALVA PARVIFLORA: A POPULATION COLLECTED FROM AREAS SURROUNDING STEEL INDUSTRIES IN AHVAZ

Pages

 Start Page 43 | End Page 55

Abstract

 Industrial activities lead to the entry of heavy metals into the environment and food chains. Regarding growth around steel production industries of Ahvaz and edible and medicinal importance of MALVA PARVIFLORA in Khouzestan Province, Zn uptake and ACCUMULATION were studied in this plant. After collecting from the area, the seeds were sown on the soil. Subsequently, four-week plants were transferred to hydroponics system including 0, 250, 500, 1000, 1500, 2000 mm Zn (NO3)2. The plants were harvested 0, 3, 6, and 9 gays after addition of Zn different concentrations. The results showed that along with increasing Zn concentration of solution culture, Zn content increased in the shoots during experiment performance, meanwhile dry weight and Zn ACCUMULATION in the roots decreased but increased in comparison with aboveground parts, respectively. There was a notable reduction of the root Zn extent in the concentrations higher than 1000 mM. Concerning TF < I and root BF > 1, it is assumed that M parviflora comprises low potential to trans locate Zn from the roots to the shoots. However, there is high capacity for this plant to accumulate Zn in the roots and exclude from the shoots under these conditions.

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