Effects of nanoscale zerovalent cobalt on growth and photosynthetic parameters of soybean Glycine max (L.) Merr. DT26 at different stages

Table 2 The effect of NZVC on the growth indices of soybean plants at different stages

Stage	Formula	Plant height (cm)	Dry weight of stems (g)	Dry weight of leaves (g)	Leaf area (cm²)
V1	Control	8.90 ± 0.16	0.06 ± 0.02	0.03 ± 0.00	113.60 ± 9.85
	CoVN-1	9.83 ± 0.36*	0.07 ± 0.02	0.04 ± 0.00*	122.80 ± 16.30
	CoVN-2	11.83 ± 0.37*	0.07 ± 0.05	0.04 ± 0.00*	114.90 ± 15.70
	CoUSA-1	10.16 ± 0.6*	0.07 ± 0.01	0.03 ± 0.00*	116.40 ± 11.70
	CoUSA-2	11.50 ± 0.25*	0.08 ± 0.03	0.04 ± 0.00*	114.50 ± 13.60
V3	Control	24.50 ± 0.98	0.29 ± 0.08	0.45 ± 0.11	205.90 ± 27.90
	CoVN-1	27.16 ± 1.16*	0.53 ± 0.10*	0.50 + 0.08	257.60 ± 18.70*
	CoVN-2	26.50 ± 1.29*	0.36 ± 0.08*	0.45 ± 0.12	242.50 ± 35.10
	CoUSA-1	27.33 ± 1.15*	0.50 ± 0.11*	0.47 ± 0.05	277.00 ± 28.20*
	CoUSA-2	28.50 ± 1.78*	0.54 ± 0.12*	0.51 ± 0.09	250.80 ± 15.70
V5	Control	30.16 ± 0.40	2.11 ± 0.12	0.57 ± 0.07	307.50 ± 21.50
	CoVN-1	35.67 ± 1.06 *	2.61 ± 0.19*	0.72 ± 0.06*	350.90 ± 21.10*
	CoVN-2	31.33 ± 0.25*	2.42 ± 0.13*	0.62 ± 0.08*	344.20 ± 22.50*
	CoUSA-1	32.00 ± 0.86*	2.79 ± 0.18*	0.78 ± 0.09*	362.80 ± 18.70*
	CoUSA-2	31.50 ± 0.52*	2.41 ± 0.17*	0.69 ± 0.05*	339.70 ± 20.10*
R1	Control	34.20 ± 2.91	2.77 ± 0.31	0.81 ± 0.21	377.40 ± 22.10
	CoVN-1	41.30 ± 3.01*	3.38 ± 0.32*	1.12 ± 0.24	400.60 ± 18.20
	CoVN-2	35.70 ± 1.51	3.08 ± 0.24	0.88 ± 0.19	394.40 ± 23.80
	CoUSA-1	38.30 ± 2.81	3.28 ± 0.28	1.06 ± 0.13	411.10 ± 15.70
	CoUSA-2	36.40 ± 1.82	3.18 ± 0.41	0.86 ± 0.12	388.90 ± 12.10

Values are means ± standard deviation, *Indicate significant difference at p < 0.05, respectively, between treatments and control; V1, V3, V5 and R1 were first, third, fifth trifoliate and begin at flowering stages, respectively; control - no NZVC treatment, using distilled water; CoVN - 1, 2 and CoUSA - 1, 2: Seeds were treated with 0.17 and 16.7 mg/kg seeds of Vietnamese and USA NZVCs, respectively

ISSN: 2524-4469