Table 1. Photosynthetic characteristics in the primary leaves of soybean and French bean grown under LN and HN conditions.

V_cmax (μmol m⁻² s⁻¹) and J₁₅₀₀ (μmol m⁻² s⁻¹). Values of Ct₀ plants were measured at 0 WAD, and values of Ct and Def plants were obtained at 1 and 2 WAD. Data are means (±sd), n = 4. Significant differences between Ct and Def plants were determined by Student’s t test (**, P < 0.01; *, P < 0.05; ns, P > 0.05).

Nitrogen Conditions		Soybean	Significance	1 WAD		Significance	2 WAD		French bean	Significance	1 WAD		Significance	2 WAD
		Ct0		Ct	Def		Ct	Def	Ct0		Ct	Def		Ct	Def
LN	Vcmax	54.9 ± 15.7	ns	72.6 ± 3.3	88.8 ± 28.1	**	34.7 ± 10.7	117.7 ± 20.1	76.8 ± 22.9	ns	42.2 ± 16.9	73.4 ± 7.9	**	22.6 ± 4.3	49.8 ± 15.8
	J1500	96.1 ± 22.4	*	131.2 ± 8.5	153.8 ± 32.3	*	68.8 ± 21	180.4 ± 25.7	127.5 ± 33.3	*	79 ± 28.2	116.3 ± 15.7	**	42.7 ± 7.2	83.3 ± 21.8
HN	Vcmax	103.2 ± 9.1	ns	121.8 ± 17.6	110.8 ± 5.1	ns	112.3 ± 6	104 ± 22.6	109.9 ± 8.5	ns	72.4 ± 11.6	139.1 ± 18.6	ns	83.7 ± 13.2	110.9 ± 5
	J1500	172.4 ± 11.1	**	198.2 ± 21.5	182.9 ± 13.7	**	160.7 ± 6.6	154.1 ± 22.6	186.3 ± 20.5	**	122.5 ± 23.4	209.2 ± 18	ns	132.3 ± 27.4	161.2 ± 22.4