
Keywords: درجه حرارت سرد; Nitrate-ammonium ratio; Nutrient solution; Chilling temperature; Tomato; CT; chilling temperature; NR; nitrate reductase; GS; glutamine synthetase; GOGAT; glutamate synthase; Pn; net photosynthetic rate; NO3â; nitrate; NH4+; ammonium; SP; soluble protei