Table 3.

Linear model correlations of stomatal conductance (g_s) and transpiration measured with the IRGA, and leaf turgor measured with the ‘ZIM’ probe.

			Turgor vs. gs			Turgor vs. Transpiration
Species	CO2 (ppm)	Light (μmol m-2s-1)	F	r2	p-value	F	r2	p-value
P. aureum	400	650	86.99	0.79	<0.01	129	0.85	<0.01
		130	37.64	0.61	<0.01	31.55	0.57	<0.01
	560	650	20.21	0.46	<0.01	112.6	0.83	<0.01
		130	10.64	0.3	<0.01	55.12	0.7	<0.01
T. brachycaulos	400	650	15.36	0.38	<0.01	0.48	-0.02	0.5
		130	5.91	0.18	0.02	7.46	0.22	<0.05
	560	650	18.34	0.43	<0.01	0.03	-0.05	0.87
		130	0.65	-0.02	0.43	9.91	0.28	<0.01

F-statistic, coefficient of determination (r²) and p-value are given. Note that leaves on which turgor was measured differed from those where g_s was measured.