Organic osmolytes
Proline concentrations increased in both populations of
S. arabicus with increases in salinity levels (Figure 1), but
the Salt Range population responded more positively to
increasing salt levels, as it accumulated significantly more
proline than its counterpart from the Faisalabad region.
Induction of salt stress resulted in a significant increase
in total free amino acids in both grass populations (Figure
1). However, the Salt Range population of S. arabicus
showed markedly greater accumulation of free amino
acids in the leaves at all salt levels as compared to the
Faisalabad population.