Effect of irrigation water salinity on grain yield, protien content and K+/Na+ ratio hulless barley

To study the effect of salinity on yield and yield compopnents of hulless barley genotypes, a field experiment was conducted in Sadough Salinity Research Center during 2011-2012. Seven hulless barley genotypes and a common barley genotype, (Onfarm no. 4) as the control were planted in saline (ECiw= 10 dS/m) and normal (ECiw= 2 dS/m) conditions arranged as RCBD with three replicates. Results showed that salinity up to 10 dS/m had not any significant effect on seed germination. The highest seed germination were for genotypes number 3 (85.6%), 4 (86.67%) and 5 (86.13%), regardless to salinity. Common barley genotype had the lowest seed germination by 72.27%. Genotypes number 5 and 3 had the highest thousand kernel weight and kerner number per spike by 43.2 g and 40.93 in saline and 44.4 g and 44.56 in non-saline conditions, respectively. Genotypes number 2 and 4 produced the highest grain yield in non-saline conditions by 437.5 and 458.43 g.m2, respectively. The highest grain yield in saline conditions was observed for genotypes number 2 and 7 by 372.17 and 366.50 g.m2, respectively. The lowest SSI in hulless barley genotypes was observed for genotypes number 2 and 7. Genotypes number 2, 3 and 7 had the highest yield stability in order to STI. Based on the experiment, genotypes number 2 and 7 had the best performance in saline and non saline conditions.