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Proceedings of the International Academy of Ecology and Environmental Sciences, 2015, 5(1): 25-37
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Article

Interactive effects of arsenic and phosphorus on their uptake by wheat varieties with different arsenic and phosphorus soil treatments

N. Karimi1, M. Pormehr1, H. R. Ghasempour2
1Laboratory of plant physiology and Biotechnology, Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran
2Department of Biotechnology-Chemical engineering, Science and Research Branch, Islamic Azad University, Kermanshah, Iran

Received 17 July 2014;Accepted 25 August 2014;Published online 1 March 2015
IAEES

Abstract
In this research we have investigated relationship between arsenate and phosphate uptake and its distribution in root, shoot, and seed of wheat varieties. Three wheat varieties were selected and grown in 7 Kg pots under controlled conditions among which, Sardari variety were collected from Iranian arsenic contaminated area and tested along with two other varieties Parsi and Pishtaz. The aim was to select a variety with low arsenate, uptake ability with the aim of improving food safety and human health. Arsenic was applied with following concentrations of 0, 5, 25, 125 and 625 mg/l in the presence or absence of P. With increasing As concentration in irrigation water, As levels of roots, shoots and seeds increased. Also, measurements indicated that As uptake rates decreased in the presence of P. Also, at 125 and 625 mg/l As concentration levels, the measured As concentrations of seed and shoot exceeded the tolerance limit, regardless of P presence. Among wheat varieties, Sardari (of contaminated area) had significantly less uptake of As compared with two other varieties. Besides, P concentrations in all wheat varieties followed the following order: seed > root > shoot.

Keywords arsenate;contaminated area;food safety;phosphate;wheat.


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