The effect of salinity stress on some traits of different barley lines under greenhouse and hydroponic conditions

In order to investigate the effect of salinity stress on some barley traits, 13 different barley lines were evaluated in an experiment factorially combined with completely randomized design (CRD) with three replications. The first factor was 13 lines of barley and the second factor was salinity at three levels (1500, 8000 and 12000 µmos/cm). These genotypes were also evaluated hydroponically at two salinity levels (control and 12 dS/m NaCl). In the pot condition, increasing salinity decreased all studied traits significantly. The highest grain and biological yield were obtained at 1500 µmos/cm and the lowest grain and biological yield at 12000 µmos/cm. The MBS-91-8 and STW-81-2 genotypes were better than other genotypes for the studied traits including grain yield and biological yield. The results of hydroponics experiment showed that the lines of STW-81-2 and MBS-91-8 in terms of root volume, root length and root dry weight was more susceptible to salinity, and lines STW-81-4, STW-81-10 and STW-82-153 were less sensitive to salinity. Therefore, sensitivity and tolerance of these genotypes can be considered in breeding programs