Table 2. Effect of seed priming with PEG (30%) on root and shoot length (cm), seedling fresh and dry weight (g) and seedling vigor index of two rice cultivars under different ZnO nanorods concentrations.

Cultivars	Priming withPEG (%)	nano-ZnO conc.(mg L−1)	Root length(cm)	Shoot length(cm)	SFW (g)	SDW (g)	SVI
Zhu Liang You 06	0	0	9.16 ± 0.61 f–h	7.33 ± 0.15 de	0.073 ± 0.01 fg	0.043 ± 0.02 b	1484 ± 29.6 f
		250	8.60 ± 0.36 h–j	6.60 ± 0.36 ef	0.070 ± 0.01 gh	0.042 ± 0.05 b	1306 ± 69.9 g
		500	8.03 ± 0.25 j	6.03 ± 0.25 f	0.066 ± 0.01 i	0.042 ± 0.05 b	1154 ± 88.6 h
		750	5.03 ± 0.45 l	3.83 ± 1.44 g	0.052 ± 0.02 k	0.041 ± 0.03 b	425 ± 21.5 j
	30	0	10.93 ± 0.11 ab	8.93 ± 0.11 ab	0.087 ± 0.05 b	0.043 ± 0.01 b	1893 ± 22.8 bc
		250	10.53 ± 0.25 bc	7.86 ± 0.92 cd	0.083 ± 0.01 cd	0.042 ± 0.01 b	1717 ± 66.2 de
		500	9.80 ± 0.20 d–f	7.83 ± 0.28 cd	0.080 ± 0.01 d	0.042 ± 0.05 b	1625 ± 53.1 e
		750	9.16 ± 0.28 f–h	7.26 ± 0.46 de	0.073 ± 0.02 fg	0.041 ± 0.01 b	1084 ± 27.8 h
Qian You No. 1	0	0	9.30 ± 0.62 e–g	7.70 ± 0.17 d	0.076 ± 0.01 ef	0.046 ± 0.05 a	1631 ± 76.1 e
		250	8.73 ± 0.32 g–i	6.73 ± 0.51 ef	0.073 ± 0.01 fg	0.046 ± 0.02 a	1422 ± 76.4 fg
		500	8.23 ± 0.20 ij	6.23 ± 0.20 f	0.069 ± 0.01 h	0.043 ± 0.05 b	1302 ± 37.4 g
		750	5.76 ± 0.68 k	3.76 ± 0.68 g	0.056 ± 0.02 j	0.041 ± 0.01 b	572 ± 36.6 i
	30	0	11.26 ± 0.25 a	9.26 ± 0.25 a	0.090 ± 0.05 a	0.046 ± 0.02 b	2053 ± 50.3 a
		250	10.73 ± 0.25 ab	8.73 ± 0.25 a–c	0.086 ± 0.01 bc	0.046 ± 0.01 b	1907 ± 49.3 b
		500	10.06 ± 0.32 cd	8.06 ± 0.32 b–d	0.083 ± 0.01 cd	0.044 ± 0.01 b	1776 ± 62.7 cd
		750	9.90 ± 0.17 c–e	7.90 ± 0.17 cd	0.076 ± 0.03 e	0.042 ± 0.05 b	1408 ± 193.9 fg

The same letters within a column indicate there was no significant difference at a 95% probability level at the p < 0.05 level, respectively.