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Effects of Different Salinities and Luminance on Growth Rate of the Green Microalgae <I>Tetraselmis chuii</I>

Author(s): F. Ghezelbash | T. Farboodnia | R. Heidari | N. Agh

Journal: Research Journal of Biological Sciences
ISSN 1815-8846

Volume: 3;
Issue: 3;
Start page: 311;
Date: 2008;
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Keywords: Tetraselmis chuii | salinity | luminance | growth phases | growth rate

In this study, the effects of (20, 30, 40 and 50 ppt) salinities and (500, 2500, 4500 and 6500 lux) luminance on the changes of the amount of biomass and the growth rate of the microalgae Tetraselmis chuii. have been studied in the controlled conditions. The growth rate, has been expressed as the number of cells mL -1. The results have indicated that the growth rate of this microalgae has varied and influenced by the salinity and light intensities. In this research, growth rate has been decreased by the salinity and light intensity and the highest biomass was observed in 40 ppt salinity x 4500 lux and the lowest was in 20 ppt salinity x 500 lux. We conclude that as like as higher plants high and low (in halophytes) salinities and light intensities cause some changes in different phases of growth rate and other biochemical aspects in unicellular green microalgea. So to maintain such these researches help us to find out the best condition that suits for the growth and culture of microalgea specially those that more important economically and are used by other organisms in food chain.
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