PROLINE INDUCED CHANGES IN REDOX BALANCE AND PHOTOSYNTHETIC ACTIVITY OF WHEAT (TRITICUM AESTIVUM L.) UNDER SALINE CONDITIONS

Salinity is a major environmental constraint that reduces plant development, growth, and yield. To appraise the potential role of foliar-applied proline as an alternative shotgun approach to ameliorate adverse effects salinity on wheat, pot experiment was conducted under controlled conditions using two wheat cultivars (Galaxy-13 salt-sensitive) (Pasban-90 salt-tolerant). The laid out in completely randomized design with factorial arrangement four replications. After ten days germination, plants were thinned maintain six seedlings each germinating irrigated weekly full strength Hoagland’s nutrient solution stress (NaCl) applied after three weeks germination. Foliar spray (100 mM) treatment salinity. caused significant reduction morphological attributes like lengths fresh weights root shoot, number leaves leaf area well yield spike length, spikelets per spike, grains 100 seed weight. Furthermore, chlorophyll fluorescence, contents, quantum yield, electron transport rate (ETR) also reduced by salt stress. However, foliar mM most effective toxic improving biomass production, both cultivars. findings confirmed ability stimulate tolerance plants.