Effect of salt stress, application of salicylic acid and proline on seedlings growth of sweet pepper (Capsicum annum L.)‎

الملخص EN

Factorial experiment was conducted to study the effect of salt stress on seedlings growth of sweet pepper (Cpsicum annuum L.) planting individually in pots (5kg) and its interactions with exogenous application of salicylic acid and proline.

Sodium chloride (NaCl) was added (in water irrigation in two concentrations (1.3 and 5 dsm / cm).

Three concentrations of salicylic acid (SA) (0,5 * 10-5,10-4 M) and four concentrations of proline (0, 1, 5, 10 mM) were sprayed exogenously on seedlings.

The results showed that salt stress was negatively affect wet weight, leaves number ; leaves surface area and shoot length coincided with free proline accumulation both in shoots and roots.

Exogenous application of SA resulted in maintaining almost growth parameters of the plant.

Wherease, supplied prolin caused decrease in almost growth parameters of the plant.

The interaction of SA 10-4 M + 5 mM proline was the best in maintaining almost growth parameters of stress the plants.