Optimal Light Intensity and Nitrogen-to- Phosphorus Ratio for Growth of Nitzschia capitellata Hust, |
| |
Authors: | Ni YAN Xiaohong HU Chuan CHEN |
| |
Institution: | 1. Institute of Life Science, Guizhou Normal University, Guiyang 550001, China; 2. Institute of Geography and Environmental Science, Guizhou Normal University, Guiyang 550001, China |
| |
Abstract: | Objective] The aim was to explore the potential of Nitzschia capitel ata as excel ent baits and bioenergy, and the optimal light intensity and nitrogen-to-phos-phorus (N/P) ratio suitable for its growth were researched as wel . Method] With light intensity gradient set, Nitzschia capitel ata was cultured with the same nutrients at (25 ±1) ℃ and light cycle at 12 h/d to select optimal light intensity. Then, Nitzschia capitel ata was cultured with the same condition, and nitrogen-to-phospho-rus ratios at 5∶1, 6∶1, 7∶1 and 8∶1. Result] With light intensity at 3 000 lx, specific growth rate and standing stock achieved the highest at 0.51 d-1 and 7.97×104 cel s/ml. The growth condition with nitrogen-to-phosphorus ratio at 6∶1 was the most suitable for Nitzschia capitel ata growth. Conclusion] The optimal light intensity and nitrogen-to-phosphorus ratio were 3 000 lx and 6∶1, respectively, for Nitzschia capitel ata. |
| |
Keywords: | Nitzschia capitellata Hust Light intensity Specific growth rate Standingstock Nitrogen-to-phosphorus ratio |
本文献已被 CNKI 维普 等数据库收录! |
|