Investigation of the physiological and biochemical effects some compounds containing copper and mangane in corn (Zea mays L.) plants under salt stress

Keywords: photosynthetic activity, chlorophill a fluorescence, manganese, copper, maize, salt stres, Zea mays L. In this study salt (NaCl; 150 mM), copper (Cu1; 0.2 ppm and Cu2; 0.3 ppm), manganese (Mn1; 3.6 ppm and Mn2; 5.4 ppm), copper+salt (Cu1; 0.2 ppm+NaCl; 150 mM, Cu2; 0.3 ppm+NaCl; 150 mM) and manganese+salt (Mn1; 3.6 ppm+NaCl; 150 mM, Mn2; 5.4 ppm+NaCl; 150 mM) physiological and biochemical changes caused by ADA-9510 genotype Zea mays L. plant were investigated. According to the chlorophill a fluorescence data, it can be said that Cu1 and Cu2 applications under salt stres positively affect photosystem I and photosystem II activities in ADA9510 genotype Zea mays L. plant. Specifically, area (the region above the OJIP curve), N (the number of reductions of QA until Fm is reched), Eo (quantum efficiency of electron transport from QA to PQ), o (one electron of a captured excition, QA) it can be said that the changes in the values of 0/(1- 0) (performance indicator of non-light dependent reactions), SM (energy required fort he closure of all reaction centers) to some extent ameliorate the damage caused by salt stres. As a result of manganese applications, it can be said that Mn1+NaCl application inhibited electron transport from reaction centers to QA in ADA-9510 genotype to a certain extent, however, as a result of NaCl, Mn1, Mn2, and Mn2+NaCl applications, the transport continues proberly. As a result, it was observed that only salt, copper+salt and manganese+salt applications in ADA-9510 genotype Zea mays L. plant, as a result of changes in the amount of phytosynthetic pigment compared to only copper and only manganese aplications, the plant entered salt stres and phytosynthetic activity was affected. However copper and manganese applications can be said to improve the negative effects of the damage caused by the negative effects on the phytosynthetic pigment, as the plant continues to grow despite the salt stres.