Fig. 4

Growth potential indexes of different concentrations of NIR-CDs (0–0.3 mg/mL) treatment after 5 days, compared to the control. a Single plant fresh weight (FW) of N. benthamiana. b Leaf area. c Root length. d Stem length. e SOD activity. All the experiments were repeated three times at least. Marked with *P < 0.05, **P < 0.01 and ***P < 0.001 exhibit significant differences from control, respectively