Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

ARSENIC DISTRIBUTION IN DIFFERENT PARTS OF BARANUNIYA (Portulaca oleracea L.) TREATED WITH ELEVATED CONCENTRATIONS OF ARSENIC (Pages : 36 - 46)

This experiment was conducted to study the distribution of arsenic (As) in different parts of Baranuniya (Summer purslane; Portulaca oleracea L.) treated with elevated concentrations of As. The seedlings were treated with 0, 10, 25 and 50 µM As from sodium-meta arsenite (NaAsO2). Dry weight (DW), visible growth, shoot height, leaf number and the width of the leaf blade were limited by the higher concentrations of As on 14 days after treatments (DAT). Arsenic treated plants did not show chlorosis or necrosis in the leaves but contained higher concentrations of As in the leaves and stems. Our result indicates that As can be accumulated in the food stuff and present at a threat to crop quality as well as human and animal health. The result also indicates that Baranuniya is As-sensitive plant and could not be used as a phytoremediator of As. Considering 10% DW reduction, the calculated critical toxicity levels (CTL) of As were 0.145 µg g-1 DW in leaf, 0.225 µg g-1 DW in stem and 33.57 µg g-1 DW in root, respectively. Download