The different changes of RWC, MDA, proline and total flavonoids observed in
indica rice varieties response to salt stress, enabled to distinguish the metabolic events
caused by ionic or osmotic components of salinity. Moreover, the metabolic pathways of
proline and total flavonoids appeared to be strongly co-ordinated in salt-tolerant varieties
more than salt-sensitive varieties, and their synchronous changes seem to be
morphological and physiological traits associated with plant tolerant to salt stress.