Ten pea (Pisum sativum) genotypes (Asgrow, Jumbo, Lincoln, Merveille de Kelvedon, Purser, Rajao Torpe,
Rondo, Snajor Kosep Korai, Wando, and a Local variety) were used to study the effects of salt stress on the growth,
photosynthesis rate, stomatal conductance, transpiration rate and chlorophyll contents. Pea seeds of different genotypes
were grown in pots having fine sand as growth medium. After 30 days of germination, the plants were subjected to salt
stress under 0, 25, 50 and 75 mM NaCl. At the end of the experiment, the plant growth was significantly decreased with
increasing salinity. After one week of salt application, photosynthesis rate, transpiration rate, and chlorophyll contents of
the plant were remarkably decreased with increasing salinity in all the genotypes. However, the Na ions accumulation was
increased with increasing salt stress, which changed the Na:K ratio, and it seems to affect the bioenergetic processes of
photosynthesis. Among different cultivars, the local variety, Lincoln and Merveille de Kelvedon were found to be salt
tolerant whereas both Purser and Rajai Torpe showed salinity sensitive behaviour. Tolerant genotypes were successful in
maintaining high plant dry matter, less concentrations of leaf Na, while non tolerant genotypes exibits high concentration
of leaf potassium contents under the saline environment.
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