Table 3.

Genotypic variability of the net CO₂ assimilation rate (A_N; μmol m⁻² s⁻¹), stomatal conductance to H₂O (g_s; mol H₂O m⁻² s⁻¹), and mesophyll conductance to CO₂ (g_m; mol CO₂ m⁻² s⁻¹) in four wheat genotypes under well-watered (RWC = 80–100%), mild stress (RWC = 60–80%), and severe stress (RWC = 40–60%) conditions.

		Mean	S.E.	c.v.	F	P
WW	AN	27.26	1.93	0.07	26.33	0.000
	gs	0.47	0.06	0.12	5.728	0.002
	gm	0.49	0.19	0.39	167.7	0.000
MS	AN	17.22	3.10	0.18	3.763	0.016
	gs	0.37	0.08	0.21	9.683	0.000
	gm	0.14	0.06	0.41	4.708	0.006
SS	AN	6.57	2.60	0.12	6.170	0.002
	gs	0.12	0.06	0.49	3.000	0.042
	gm	0.06	0.02	0.34	0.302	0.824

S.E.,standard error; c.v., coefficient of variability; F, F ratio, p, probability.