J. Bio. Env. Sci.10(1), 265-270, January 2017
In order to evaluate the response of rapeseed genotypes to NaCl salinity, a hydroponic experiment at seedling stage with three replications was performed in greenhouse. Twelve spring rapeseed genotypes were treated by sodium chloride on three levels (0 (control), 175 and 350 mm) to assessed salinity effects on rapeseed. Traits were measured 28 days after imposing salt stress. Variance analysis showed that all traits except for leaf water potential were significantly affected by salinity. Also, differences between genotypes in most traits were significant. Hyola308 as the most tolerant and SW5001 as the most susceptible genotypes were identified. Cluster analysis of genotypes based on WARD method divided the genotypes to three groups and two genotypes Hyola308 and SW5001 were grouped separately. These results indicated that these traits which associated to salinity stress can be used in future researches as salt tolerance indicators. Due to the significant differences between the genotypes in most traits, this diversity can be used in breeding programs to find the location of genes which involved in salinity tolerance and also for researching the mechanisms of salt tolerance.
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