Siriwan Phetsombat.Maleeya Kruatrachue.Prayad Pokethitiyook.Suchart Upatham.Mahidol University. International College. Science Division.2014-10-282018-02-222014-10-282018-02-222014-10-282006Journal of Environmental Biology. Vol. 27, (2006), 645-652https://repository.li.mahidol.ac.th/handle/20.500.14594/8786The toxicity and accumulation of heavy metals, cadmium (Cd) and lead (Pb) in aquatic fern, Salvinia cucullata were studied. Plants were cultured in Hoagland’s medium which was supplemented with 0.5, 1,2, and 4 mg/l of Cd and 5, 10, and 40 mg/l of Pb and were separately harvested after 2, 4, 6 and 8 days. The toxicity symptoms of Cd and Pb to S. cucullata showed chlorosis on leaves. There were significant deceases in the relative growth, biomass productivity and total chlorophyll content when the exposure time and concentration were increased. The accumulation study showed the significant increases of both metals when the exposure time and concentration were increased. The roots of S. cucullata had higher Cd and Pb contents than leaves suggesting that the metals were bound to the root cells and were partially transported to the leaves.engMahidol UniversityToxicity.Bioaccumulation.CadmiumLeadSalvinia cucullataArticle