Assessment of the Physiological Condition of Spring Barley Plants in Conditions of Increased Soil Salinity

Soil salinity is one of the most important environmental factors threatening agriculture on a global level. Plants show differences in resistance to salt stress, both terms species and variety. The aim study was determine effect stress photosynthetic efficiency activity plants two barley varietie—KWS Irina RGT Planet. grown pot experiment were subjected soil treatment with sodium chloride (NaCl) at concentrations 0, 50, 100, 150 mmol?(dm3)?1. Measurements made four times intervals 7, 14, 21, 28 days after application NaCl. relative chlorophyll content leaves (CCl) selected fluorescence parameters (Fv/Fm, Fv/F0, PI) gas exchange (PN, E, gs, Ci) assessed. In final stage experiment, visual assessment plants’ condition carried out amount fresh mass (FM) above-ground part determined. potassium vegetative parts also analysed. Salinity significantly influenced values measured tested genotypes. High levels 100 mmol NaCl (dm3)?1 negatively affected growth development by disturbing process photosynthesis other plant parameters. antagonistic relation resulted decrease K+ plants, along an increase