Table 3.

Variance analysis for each of the three leaf gas exchange variables among genotypes (G) and salinity treatments (S) in Experiments (Expt) 1–3. MSE refers to mean square error. Variables were measured at three times (28, 35 and 42 DAS, which were 7, 14 and 28 d after salinity treatment, respectively) on 4–6 plants per treatment and per genotype in Experiment 1, 2, and 3.

Factors	Net photosynthesis rate (μmol CO2 m−2 s−1)	Transpiration rate (mmol H2o m−2 s−1)	Leaf conductance (g H2o m−2 s−1)
	MSE	MSE	MSE
Genotype (G)	781.68***	41.07***	0.46***
Salinity (S)	1335.31***	183.75***	2.03***
Experiment	185.27**	93.05***	0.97***
Date of measurement (DAS)	1201.31***	28.7**	0.18**
Leaf position	86.43*	0.943 ns	0.08 ns
G × S	104.87**	15.5**	0.14***
S × Expt	131.77**	12.7*	0.06**
Errors	30.88	4.96	0.03

^*P < 0.05.

^**P < 0.01.

^***P < 0.001.