The influence of NaCl concentration on the growth of Nasturtium officinale R.Br. plants concerning biological and technical life support system of the man

The limits of salt tolerance of Nasturtium officinale R.Br. plants as applied to biological-technical life support system for the man (BTLSS), in which the plants were grown on model solutions imitating solutions with addition of mineralized exometabolite were investigated. The influence of NaCl in the concentrations range: 0.7, 1.4, 1.6, 1.8, 2.0, 2.1, 2.2 и 2.3 g×L-1 on dry aboveground biomass and accumulation of po- tassium and sodium in Nasturtium officinale R.Br. plants, grown on model solutions imitating solutions with addition of mineralized human exometabolite was investigated. Model solution in NaCl concentration equal to 0.02 g×L-1 was used as control. Watercress plants (Nasturtium officinale R.Br.) were grown using method of water culture with photosynthetically active radiation (PAR) intensity equal to 690 μmole×m-2×s-1. Photoperiod was 24 h. Dechlorinated tap water was daily added into the vessels with plants during 7 days as solution evapotranspiration, after this the solution was replaced with a fresh one...