Table 4. Regeneration of switchgrass at different concentrations of ZnO-NPs.

Explant	Control RGM	RGM +ZnO-NPs 10 mg/L	RGM+ZnO-NPs 20 mg/L	RGM+ZnO-NPs 30 mg/L	RGM+ZnO-NPs 40 mg/L	RGM+ZnO-NPs 50 mg/L
Seeds	7.13±1.05c 24%	13.20±1.14b 43%	17.28±0.75b 57%	23.10±2.1a 76%	5.21±2.45 16%	0.00±0.00d 0%
Internodes	10.00±1.35c 33%	15.00±0.05b 50%	24.00±0.01a 80%	21.33±1.1a 70%	17.00±1.25b 56%	7.43±0.98c (23%)

LSD for explant = 4.019. p< 0.05. Small alphabets are average of 3 replicates each replicate had 10 treatments.