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ELEMENTAL COMPOSITION IN VARIOUS THALLUS PARTS OF THREE BROWN SEAWEEDS FROM KARACHI COAST

MUHAMMAD AFZAL RIZVI¹ AND MUSTAFA SHAMEEL²

Abstract: Three brown seaweeds Stoechospermum polypodioides (J.V.F. Lamourourx) J. Agardh, Jolyna laminarioides Guimarães in Guimarães et al., and Sargassum tenerrimum J. Agardh were collected during January 1997 and July 2002 from coastal areas near Karachi-Pakistan, dried powdered and ashed. From ashes of lower, middle and upper parts of their thalli 11 elements were quantitatively estimated. The results indicated that each species behaved differently. Average quantity tremendously increased more than 4 times in the middle part but suddenly decreased in the terminal part which was lesser than basal portion.

¹Hamdard Research Institute of Unani Medicine, Faculty of Eastern Medicine, Hamdard University, Karachi-74600, Pakistan

²Department of Botany, University of Karachi, Karachi-75270, Pakistan

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