SODIUM CHOLRIDE INFLUENCES GROWTH OF DIAZOTROPHIC BLUE-GREEN ALGAE IN RICE FIELDS
Y. P. SINGH *
Department of Botany, University of Allahabad, Allahabad 211 002
RAMA KANT *
Department of Botany, University of Allahabad, Allahabad 211 002
V. K. DWIVEDI *
Department of Botany, Govt. P. G. College, Santa 485 001
N. C. HALDER *
Department of Botany, Uluberia College, Calcutta University, Howrah
G. L. TIWARI *
Department of Botany, University of Allahabad, Allahabad 211 002
*Author to whom correspondence should be addressed.
Abstract
Present paper deals with the study of effect of sodium chloride on growth (chlorophyll a) in 10 species of 5 genera of Nostocaceae, Nostocales, organisms include Nostoc (3), Anabaena (3), Wollea (1), Cylindrospermum (2) and Aulosira (1). All these species were grown in different concentrations sodium chloride (0.05M, 0.1OM, 0.15M, 0.2OM, 0.25M) and results were expressed in terms of chlorophyll-a. On the basis of observations it has been concluded that Aulosira was the most tolerant followed by Wollea, Nostoc and Anabaena while Cylindrospermum was most susceptible.
Keywords: Blue-green algae, Blue-green algaediazotrophic, diazotrophic, rice fields, sodium chloride, tolerance.