Evaluation Capability of Wheat (Triticum aestivum L.) Genotypes under Salinity (NaCl) Stress as a Sy

Healthy seed germination is critical for the growth cycle of plants, and determines the establishment of seedlings and subsequent crop production. High salinity conditions can result in difficulty for seed germination and delays the germination period. Development of salinity tolerant genotypes through screening and selection is one important strategy to overcome this case. In the present study, the effects of salinity (0 mM NaCl (control= distilled water)), (50 mM NaCl (slight salt stress)) and (100, 150 and 200 mM NaCl (high salt stress)) had gradual and negative effects on seed water uptake and germination attributes. The results verified a remarkable variation for genetic materials ability under salinity conditions. Overall, among 14 wheat genotypes (Sids-12, Nielien and Weiber) genotypes were seemed to be relatively salt tolerance and (Gimeza-12, Diebera, Misr-1, Katela) genotypes were seemed to be moderately tolerant genotypes to salt stress, which were attributed to higher germination percentage, seedling length, seedling fresh and dry weight, tissue water content, vigor index and tolerance index. On the other hand, the genotypes (Shandaweil-1, Giza-168, Misr-2, Sids-1, Sanora, Gimez-7 and Sakha-94) were found to be moderately to strongly sensitive toward salt stress conditions. This systematic method is able to identify genetic variation in salinity tolerance in studies breeding material or in a large number of genotypes of wheat, and help to make account of differences with respect to salinity conditions.

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