Effects of molybdenum nutrition on the total yield of Salicornia europaea under different nitrogen solution

The seawater solution cultivation was conducted to determine the effects of different concentrations of molybdenum nutrition on the total yield of Salicornia europaea under different nitrogen solution. The results of this study showed that the nitrate reductase and xanthine dehydrogenase activity, the pigments and ureides, and total yield of S.europaea increased with the increase of molybdate solution under two seawater solution cultivations. Foliar spray of 3 molL-1 molybdate was more beneficial to S.europaea growth than addition of solution. The obvious difference of S.europaea growth was observed between NO3－N and NH4+N solution, indicating that the NO3－N solution was more beneficial to S.europaea growth than NH4+N solution because the NH4+N solution increased the chlorophyll content of S.europaea shoot, the activity of xanthine dehydrogenase and the level of ureides, decreased the activity of nitrate reductase and biomass of S.europaea when compared to NO3－N solution. This study implied that the supply of molybdenum and NO3－N for Salicornia in seawater increased the plant biomass by increasing the activities of NR and XDH.