Effects of Osmotic Stress Induced by Polyethylene Glycol (Peg) 6000 and Mannitol on Seed Germination and Seedling Growth of Durum Wheat

Seed germination is generally the critical step in seed establishment and thus determination of successful crop production. This study was focused at examination biochemical parameters effected by low water potential which generated polyethylene glycol (PEG) 6000 mannitol, related to drought stress growth Waha durum wheat genotype. Two tests were carried out a chamber; first comprises into Petri dishes presence different concentrations two osmoticums (0, 5, 10, 15 20 % PEG6000 mannitol). The second test nutrient solution BD medium. Our results shows that Both PEG -6000 mannitol reduced germination. Therefore, rapid increase observed rate both for control plants subjected concentration 5 g/L 10 changes proportion time. For g/L, this phase very short, explains due inhibitory effect on In study, PEG-6000 treatments resulted an some proteins decrease others. displayed 12 bands plants, 40 stressed (all treatments) 35 treatments.