الفهرس 
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Abstract
- Evaluate the response of sweet pepper to salinity stress during the different growth stages. - Assess the potential of exogenous application of acetylsalicylic acid to alleviate the adverse impacts induced by salinity on pepper. -Find out the most effective concentration/s of acetylsalicylic acid to be adopted as exogenous application. Methods & Results : Three experiment were carried out during 2014 and 2015 to assess the impact of salinity on sweet pepper (capsicum annuum, L) cv. Orlando, as well as the potential of exogenous application of acetylsalicylic acid in alleviating the deleterious impacts of salinity on pepper through various growth stages. Salinity stress negatively affected pepper through all growth stages (seed germination, seedling establishment, and fruiting plant). Exogenous application of acetylsalicylic acid either by seed priming or foliar application could potentially relieve harmful impact of salinity on pepper plants. Conclusion : According to the results obtained from the current study, it may be concluded that: Pepper is a sensitive vegetable crop to salinity. The negative impact of salinity was apparent through different life stage of the crop, so it would be better to use fresh water for pepper transplant and yield production. Under limited fresh water supply, such as situation in Egypt, and use of low-quality water for irrigation purpose, preventive measures must be taken such as seed priming and exogenous application of protectants. Acetylsalicylic acid is a potential compound to alleviate salinity stress on pepper through different growth stages, either as priming agent or through foliar application on pepper plants. The most appropriate dose ranged around 0.3 mM acetylsalicylic acid, either as priming agent of foliar applicant three times on plants.