Abstract
The seawater irrigation induced increase of biomass production, % moisture content and succulence of Salicornia brachiata. Chlorophyll [Chl (a+b)] content in whole plant as well as in separated palisade mesophyll and photosynthetic C-14 fixation increased in plants treated with seawater concentration up to 1545.71 eq m-3 and declined at 1987.34 eq m-3 seawater concentration. Photoreduction of 2,6-dichlorophenolindophenol (DCPIP) and ferricyanide (FeCN) of isolated chloroplasts did not show significant variation in plants from various salinity treatments. However, the C-14 fixation rate and photochemical activities decreased significantly when the same concentration of salts was added to the reaction medium of isolated chloroplasts. Compartmentation of ions was noticed in different tissues: the Na+ and Cl- concentrations were higher in spongy mesophyll cells than in palisade cells; on the other hand, the K+ concentration was higher in palisade cells than in the spongy mesophyll ones.