Potential of duckweed (Lemna minor) for removal of nitrogen and phosphorus from water under salt stress.

摘要: Duckweed plays a major role in the removal of nitrogen (N) and phosphorus (P) from water. To determine effect salt stress on N P by duckweed, we cultured Lemna minor, common species P-rich water with NaCl concentrations ranging 0 to 100 mM for 24 h 72 h, respectively. The results show that capacity duckweed was reduced stress. Higher longer cultivation period exerts more injury greater inhibition removal. Severe (100 mM NaCl) induced release even resulted negative efficiencies. indicate L. minor should be used remove salinities below 75 mM NaCl, or equivalent