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Effect of organic contaminants on seed germination of Lolium multiflorum in soil

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Author(s): DL Korade | MH Fulekar

Journal: Biology and Medicine
ISSN 0974-8369

Volume: 1;
Issue: 1;
Start page: 28;
Date: 2009;
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Keywords: Ryegrass | Toxicity | Anthracene | Chlorpyrifos | Phytoremediation

ABSTRACT
The seed germination trials have relevance in selection of the plants for their prospective use inphytoremediation. The effect of organic contaminants; anthracene and chlorpyrifos on the seedgermination of Lolium multiflorum (ryegrass) has been investigated. The germination of ryegrass seedswas evaluated in the separately spiked soil with organic compounds at the concentrations 10, 25, 50, 75and 100 mg/kg while un-spiked soil taken as control. There was no inhibitory effect of anthraceneobserved on germination as compared to the control whereas significant reduction and delay in seedgermination was observed at the higher chlorpyrifos concentrations of 75 and 100 mg/kg. The resultsshow the pesticide (chlorpyrifos) toxicity was not caused to the ryegrass seeds up to the concentrationof 50 mg/kg. The level of seed germination was found to decrease with increasing concentrations ofchlorpyrifos in the soil. The findings of this study assessed ability of ryegrass seeds to survive andtolerate the contaminants for phytoremediation studies.
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