Abstract:

Seed of Suaeda maritima (L.) were collected from a salt marsh at East Sussex, United Kingdom, in 2003. Seeds were germinated on filter paper and kept in petri dishes and wetted sterile water at 23-28℃. After 7 days of germination, seedlings were carefully transplanted to solution culture with modified Hangland nutrient solution containing:6 mmol/L KNO3, 1 mmol/L NH4H2PO4, 0.5 mmol/L MgSO4, 0.5 mmol/L Ca(NO3)2, 92 μmol/L H3BO3, 0.6 μmol/L CuSO4, 0.7 μmol/L (NH4)6MO7O24, 18 μmol/L MnCl2, 1.6 μmol/L ZnSO4, 60 μmol Fe-citrate. After 21 days in solution culture, then plants were treated with 150 mmol/L NaCl for 0 h, 6 h, 12 h, 24 h, 36 h and 48 h. Fresh weight, Dry weight and Na+ content of root, stem and leaf were determined according to different treatment time. Na+ absorption rate of Suaeda maritime was analyzed. The results showed that Na+ absorption rate of Suaeda maritima had no significant differences under different time when plants were treated with 150 mmol/L NaCl. So the treatment time in connection with Na+ absorption pathway should be supposed to 48 h. It did not only save on manpower, material resources and financial resources but also get twofold results with half the effort.