Impact of Silicon Foliar Application on the Growth and Physiological Traits of Carthamus tinctorius L. Exposed to Salt Stress

Abstract Althought safflower is a tolerant crop against many environmental stresses, but its yield and performance reduce under stress. The aim of this experiment was to investigate the effect silicon (Si) application on possibility increasing salinity resistance related mechanisms in safflower. A greenhouse conducted effects Si spraying (0, 1.5 2.5 mM) plants grown salt stress condition (non-saline 10 dS m ?1 ). Salinity reduced seedling emergence percent rate, growth parameters disrupted ion uptake increased time specifc leaf weight. Spraying plant height, fresh dry weight, area, relative water content (RWC), potassium, calcium content, while sodium absorption decreased. As result, K + /Na Ca 2+ ratios were increased. Elevated contents indicate an enhanced selectivity following may increase discrimination Na . Treatment with mM showed most positive measured traits. Decrement area ratio indicates more severe compared biomass production. On other hand, specific weight non-stress conditions, which revalues expansion. Improvement RWC reason for icrease Data shows that especialy can damage