Table 2.

Effect of CuO-NPs on regeneration frequency.

O. sativa L. varieties	Control	CuO-NPs (1 mg/L)	CuO-NPs (5 mg/L)	CuO-NPs (10 mg/L)	CuO-NPs (15 mg/L)	CuO-NPs (20 mg/L)
Basmati 2000	17.00 ± 1.1c (42%)	27.00 ± 2.1d (67%)	21.00 ± 3c (52%)	16.21 ± 1.1b (40%)	27.00 ± 1.1 (67%)	32.33 ± 2.3e (80%)
Basmati 370	8.00 ± 1.3a (20%)	0.00 ± 0.00 (0%)	0.00 00 ± 0 (0%)	13.00 ± 2.3b (32%)	15.00 ± 1.0 (37%)	17.00 ± 3.1c (42%)
Basmati 385	24.00 ± 1.00d (60%)	33.67 ± 1.7e (82%)	23.00 ± 1.4d (57%)	19.00 ± 2.1c (47%)	24.00 ±2.2 (60%)	37.34 ± 1.0e (92%)
Super Basmati	15.33 ± 1.00c (37%)	19.00 ± 2.2c (47%)	11.00 ± 1.4b (27%)	9.00 ± 2.8a (22%)	26.00 ± 1.1d (65%)	21.00 ± 1.5c (52%)

Alphabets (a,b,c,d,e) on values represents LSD at p < 0.05.