In soil-grown plants measuring the biomass production at 70 d after sowing showed the strongest relationship with salt tolerance, and has revealed substantial variation among genotypes at both levels of salinity stress which was also predictive of grain yield in the field. However, there was no significant correlation between the salt tolerance of 15 genotypes after 70 d and their salt tolerance at earlier growth stages. This finding confirmed the unsuitability of using an early assessment of salinity tolerance at the seedling stage. Tolerance to salinity is necessary at the whole plant level through the complete life cycle in grain-producing species. The determination of salt tolerance in saline conditions presents simple and useful parameters, the differences in the levels of salt tolerance at the seedling stage did not reflect enhanced salinity tolerance at the adult plant level. Similarly, most investigators have been unable to demonstrate a relationship between tolerance under laboratory high-salt conditions and later growth stages across a range of species, particularly bread wheat, durum wheat, and barley. Nevertheless while using relative growth at the early stage seems to be a convenient test for screening large numbers of genotypes in a rapid manner, it must first be demonstrated that it is correlated to tolerance during vegetative growth, flowering, and maturity if it is to be of value. The heritability for salt tolerance, which ranged from 0.36 to 0.66, show that genetic differences explain a major part of the phenotypic differences. There may be scope to improve the screening efficiency for shoot biomass ratio further and thereby the operational heritability values by sampling larger numbers of plants at one time.