RT - Journal Article T1 - Evaluation of Barley (Hordeum vulgare L. var. Karon dar Kavir) Stress Tolerance to Cl/SO4 Anionic Ratio of Irrigation Water JF - JSTNAR YR - 2010 JO - JSTNAR VO - 13 IS - 50 UR - http://jstnar.iut.ac.ir/article-1-1193-en.html SP - 119 EP - 131 K1 - Tolerance indices K1 - Cl/SO4 ratios K1 - Barley K1 - Salinity stress. AB - Chlorine and sulfate toxicity in water and soils are the main factors limiting growth and yield of most plants. Tolerance and sensitive indexes related to Cl and SO4 in irrigation water and effect of nitrogen fertilizer on barley were evaluated in a completely randomized design with three replications, under greenhouse conditions. Quantity salinity tolerance and susceptibility indices such as Mean Productivity (MP), Tolerance Index (TOL), Geometric Mean Productivity (GMP), Stress Susceptibility Index (SSI), Reduction Yield Ratio (Yr) and Stress Tolerance Index (STI) on the basis of plant yield with stress (Ys) and without stress (Yp) conditions were determined. Results showed that STI had a positive and highest significant correlation with grain and straw yields, compared to other indexes. Study of Standard Beta contents in grain and straw with STI index showed that the impact of Cl had a greater effect on reduction of salinity tolerance than SO4. Also Cl/SO4 ratios of 1:3 and 1:2 for grain and 1:2 and 1:1 for plant straw brought about highest tolerance to salinity, compared to non stress conditions. The scatter plot also confirmed such findings. LA eng UL http://jstnar.iut.ac.ir/article-1-1193-en.html M3 ER -