Table 2.

Effects of elevated CO₂ on leaf traits in F1 and F5

Generation	Stage	CO2	LMA (g m−2)	N a (g m−2)
F1	Jointing	A	56.0 ± 0.9 a	2.11 ± 0.04 a
		E a	55.8 ± 0.7 a	2.06 ± 0.02 a
	Filling	A	66.2 ± 1.1 a	1.68 ± 0.04 a
		E a	65.4 ± 1.2 a	1.58 ± 0.04 b
F5	Jointing	A	49.3 ± 0.7 a	1.63 ± 0.04 a
		E g	50.7 ± 1.0 a	1.67 ± 0.03 a
		E a	51.8 ± 0.8 a	1.67 ± 0.03 a
	Filling	A	61.0 ± 2.0 b	1.37 ± 0.05 a
		E g	67.7 ± 1.4 a	1.47 ± 0.03 a
		E a	66.9 ± 1.0 a	1.42 ± 0.03 a

Abbreviations: LMA, leaf mass per unit leaf area; N_a, leaf nitrogen content per unit leaf area. Values are the mean ± s.e.m. (n = 4). Different lowercase letters indicate significant differences among CO₂ treatments (P < 0.05). The values of F1 were taken from our previous paper (Yang et al., 2021).