The Bioscan, 2 (1) 047-049,2007
An International Quarterly Journal of Life Sciences
web site: www.thebioscan.in 
CADMIUM CHLORIDE INDUCED DOSE AND DURATION DEPENDENT
BIOMASS VARIATION IN NOSTOC PUNCTIFORME Ag. IN CULTURE
NEETA RANI, BHARATI RAIPAT** AND LATIKA SHARAN*
Department of Zoology, Ranchi University, Ranchi - 834 008. ** Department of Zoology, St. Xavier's College, Ranchi - 834 001. *Department of Botony, Ranchi Women's College, Ranchi - 834 001. E-mail: latikasharanru@sify.com

KEY WORDS

Cyanobactria
Biomass
Cadmium chloride
Bioaugmentation





Received on: 14.12.2006

Accepted on: 24.02.2007



*Corresponding
 Author

ABSTRACT

Bioaugmentation is one of essential components of bioremediation, a biotechnology method of recent origin. Bioaugmentation is the process of the introducing a known veriety of bioremedial agent in to contaminated environment to initiate and sustain in specific bioremedial process. The paper deals with the biomass production of Nostoc punctiforme under the influence of different concentrations of cadmium chloride in laboratory culture. The success of bioremedial process by N. punctiforme depends upon its biomass production, which in due course removes the heavy metal. In control culture the biomass of N. punctiforme as mg/50 ml varied from 13.79 (0 days) to 22.88 (25th day). The corresponding values for 0.01 and 0.05 ppm cadmium chloride treatment after 25 days were 20.68, 14.98 and 10.01 mg/50ml respectively, indication a decline in biomass of N. punctiforme with increase in concentration. A, two way ANOVA revealed the variation of biomass with respect to concentration and duration of treatment statistically significant (F= 10.494, df5,3; p<0.001 and f = 20.004, df 5,3; p<0.001). The result indicate better performance of N.punctiforme at lower concentrations.