Table 2. Effect of various concentrations of ZnO-NPs on MS medium for callus induction frequency.

Explant	Control	ZnO-NPs 10 mg/L	ZnO-NPs 20 mg/L	ZnO-NPs 30 mg/L	ZnO-NPs 40 mg/L	ZnO-NPs 50 mg/L
Seeds	16.30±1.2b 53%	19.33±1.0b 63%	25.16±2.6c 83%	27.00±1.9c 90%	13.14±0.01b 43%	0.00±0.0d 0%
Internodes	19.00±0.1b 63%	19.00±0.0b 63%	29.66±2.2c 96%	26.00±0.01c 86%	17.00±2.2b 56%	5.17±1.0a (16%)

LSD for media = 4.3920. LSD for explant = 2.5227. p< 0.05. Small alphabets are average of 3 replicates each replicate had 10 treatments.