Table II.

Leaf growth analysis of hydroponically grown wheat

Leaf Growth Parameters	Treatment				ANOVAa
	LCHN	HCHN	LCLN	HCLN	CO2	N
LAR (m2 g−1)	0.017  ± 0.0005	0.013  ± 0.0003	0.016  ± 0.0008	0.011  ± 0.0002	***	**
SLA (m2 g−1)	0.034  ± 0.0008	0.026  ± 0.0006	0.030  ± 0.0006	0.021  ± 0.0004	***	***
LWR (g g−1)	0.51  ± 0.007	0.48  ± 0.005	0.52  ± 0.025	0.51  ± 0.004

LAR, SLA, and LWR of hydroponically grown wheat in 360 μmol mol⁻¹ CO₂ (LC) or 650 μmol mol⁻¹ CO₂ (HC) with either free access to N (HN) or at a low rate of N supply (LN). Plants were harvested when the sixth leaf had fully expanded. Values are the means ± se.

^aANOVA, Analysis of variance: **, P < 0.01; ***, P < 0.001. There were no significant interactions between CO₂ and N.