DETECTING DIFFERENCES IN WHEAT FOR SALT TOLERANCE THROUGH MULTI PARAMETERS EVALUATION-II: PHYSIOLOGICAL PARAMETERS

A pot experiment was conducted in a randomized complete block design using 3 wheat genotypes comprising salt sensitive cultivar Inqlab (V1), a known salt tolerant line N-1073 (V2), a newly developed wheat genotype N-9760 (V3) and 4 salinity levels of 1.5 (control), 5, 10, and 15 dS m -1 developed in irrigation water. The objectives were to examine i) variation in accumulation of different ions and different attributes of chlorophyll fluorescence on fully developed flag leaf and ii) possible relationship of quantum yield of chlorophyll fluorescence (Fv/Fm) with various ions and grain yield at maturity stage. Concentrations of Ca 2+ in different genotypes differed significantly under control and various salinity levels in both root and shoot especially under 15 dS m -1 ,Cl - concentrations in roots and Na + in shoots and roots increased while K +