Photosynthetic response of some Triticum cultivars to the combined influence of nanofertilizers and water deficit

The effects of water deficit modelling by polyethylene glycol (PEG), metal nanoparticles (NPs) and their combined action on status, chlorophyll fluorescence pigments composition in the leaves three drought tolerant wheat genotypes – Triticum aestivum L. (Trypilska Favorytka cultivars) dicoccum Schrank. (cv. Holikovska), have been studied. Water deficit, induced PEG, as well treatment with NPs (Cu, Fe, Mn, Zn) action, showed no maximal quantum yield PSII photochemistry (Fv/Fm) dark-adapted studied plants. However, decreased efficiency excitation energy capture open reaction centers (Fv′/Fm′) light-adapted cultivar. increase photochemical quenching (qP) actual electron transport (φPSII) levels, decrease non-photochemical coefficient (qN) were observed Holikovska cultivars under stress treatment. According to photosynthetic composition, plants, grown medium did not bear an additional pressure seedlings. negative effect simulated cv.