NaHCO3浓度对等鞭藻3011、等鞭藻塔溪堤品系和绿色巴夫藻生长的影响

摘要

对等鞭藻3011(Isochrysis galbana3011)、等鞭藻塔溪堤品系(Tahitian Isochrysisgalbana)和绿色巴夫藻(Pavlova viridisai)3株微藻种进行培养。NaHCO3的质量浓度分别为0，200，400，800，1200和1600mg／L，培养温度(22±1)℃，盐度28，光照强度5000lx。结果表明，NaHCO3的浓度对3株微藻生长的影响差异显著，经过6d的培养，培养液中不加NaHCO3、但连续充气组中3株微藻的细胞浓度都达到最大值；除充气不加NaHCO3组外，3株微藻的细胞浓度都在NaHCO3 1600mg／L组中达到最大值。%NaHCO3 concentrations were designed at 100,200, 400, 800, 1 200and 1 600 mg／L. Three marine microalgal strains (Isochrysis galbana 3011, Tahitian Isochrysis galbana and Pavlova viridis)were cultured at water temperature (22±1)℃; the salinity was adjusted to 28 by using distilled water,and the light intensity was 5 000 lx. The results showed that NaHCO3 had significant influence on the growth of the 3 marine microalgal strains. After 6 days culture, the 3 marine microalgal strains all grew the best when NaHCO3 concentration was 0 mg／L with continuously air-bubbling (aerating groups). Except that, the optimum NaHCO3 concentration for the highest cell density of I.galbana 3011, Tahitian I.galbana and P.viridis were all at 1 600 mg／L.