Interactions of salinity stress and mineral nutrition on yield and yield component of barley (Hordeum vulgare L.)

This study was conducted in order to estimation of narrow sense heritability of leaf، stem and spike dry weight and genetic correlation between these traits with yield، biomass and harvest index. Tow parents Sardari and SON 64 with 50 F3 line resulted of cross between them was planted in RCBD design in three replications. Measuring of these traits sampling before anthesis stage. Estimation of genetic parameters was conducted in attention to important of genetic variation between and within generations. Estimation of narrow sense heritability for dry weight of leaf، stem and spike was 69. 5، 68. 6 and 56 percent، respectively. These results indicated role relatively high of additive effects on control of these traits. Therefore، from selection on the basis of these traits، favorable genetic advances will except. In this study، dry weight of leaf had negative genetic correlations with yield، harvest index and positive genetic correlation with biomass، and dry weight of stem and spike. Spike dry weight had positive genetic correlation with yield and biomass. In attention to high heritability and positive genetic correlation estimates for dry weight stem and spike with yield، these traits proposed for selection and improvement of yield traits of this population.