Table 1. Nanoparticles effect the growth and development of three week old tobacco seedlings.

	MS Media (Control)	0.1% Al2O3 Nanoparticles	0.5% Al2O3 Nanoparticles	1% Al2O3 Nanoparticles
Average Root Lengths (mm)	29.54±2.09 a	22.04±3.01 b	5.52±0.24 c	2.31±0.13 c
Average Leaf Count	3.77±0.09 a	3.34±0.14 b	2.82±0.08 c	2.39±0.14 d
Average Germination Rate	24.80±2.33 a99.2%	23.20±1.24 a92.8%	24.00±0.55 a96%	22.00±1.00 a88%
Average Biomass per seedling (mg)	12.0±0.0015 a	7.5±0.0015 b	2.8±0.00056 c	2.1±0.0003 c

All physical measurements were averaged for each treatment (control, 0.1% Al₂O₃, 0.5% Al₂O₃, and 1% Al₂O₃). Each average is stated with the standard error associated with that treatment and the significance levels are denoted with the letters, a–d. Different letters dentote statistical significance within the physical measurement.