Evaluation of Some Soybean Genotypes (Glycine max) under Salt Stress

Salinity is one of the most important environmental stresses that can affect crop yields. Identification of salt tolerant plants such as soybean, one of the most important oilseed crops, has a great importance. For this purpose, a factorial experiment in the completely randomized design with three replications was performed in the Sari Agricultural Sciences and Natural Resources University's greenhouse. Salinity treatments consisted of four levels: zero (control),3, 6 and 8 dS/m Sodium Chloride (NaCl) solution and genotype the number 8. Results were showed that genotypes, salinity and interaction of genotypes and salinity for all traits the number of nodes per component were significant. And significant decrease with increasing salinity was observed in most of the characteristics. The results referred to the fact that the plant growth was restricted in salinity stress conditions, as the control treatment produced maximum and the salinity treatment with 8 dS/m NaCl produced minimum yield. According to data obtained from the analysis of the traits, Hill CE is the most tolerant variety and Ford and 032240-D are sensitive varieties.