Studies on the Growth Variation, Alginic Acid and Mannitol ContenU in Padina Gymnospora (Kuetzing) Vickers

The alginic acid content of some Indian brown algae has been studied by Valson (1955). Pillai (1957). Kappanna at. a/5. (1962) Umamaheswara Rao (1969). Umamaheswara Rao and Kalimuthu (1 972) and Kaliaperumal and Kalimuthu (1976). In recent years information on growth variations and mannitol and alginic acid contents in certain alginophytes was made available by the studies of Umamaheswara Rao (1969). Umamaheswara Rao and Kalimuthu (1972) and Kaliaperumal and Kalimuthu (1976) . In the present account variation in growth. and mannitol contents in Pad in. gymnospo,a observed over a period of 2 years (January 1975 to December 1976) are given.