Results presented in Table 6 showed that increasing salinity
decreased the osmotic potential of the plant for both measurement
periods. This change is considered one of the defensive
means by which plants tolerate stress, as this increases its ability
to absorb water. The values detected show an inverse
relationship between salt stress and osmotic potential for the
sap of bean leaves, where the reduction of osmotic potential increases
with the increase of sodium chloride added to the nutrient solution, as well as with the increase in the length of stress
exposure, as this was noticed in both measurement periods
The statistical analysis demonstrated, that the reduction in
osmotic potential was significant with all concentrations in
both measurement periods, except the minimum concentration
60 mM after 10 days of the treatment.