Table 2.

Results of statistical analysis and mean values of absolute water content, relative water content (RWC), pre-dawn (Ψp) (day 18) and mid-day (Ψm) water potential and osmotic potential (π) in four rice cultivars cultivated under control and drought stress conditions (condition)

GLM	Absolute leaf water content		RWC		Ψp		Ψm		π
Transformation	None		None		None		None		None
	F	p	F	p	F	p	F	p	F	p
Model	4.99	***	1.67	n.s.	3.43	*	111.1	***	10.28	***
Cultivar	5.31	*	1.64	n.s.	1.23	n.s.	15.27	***	4.09	*
Condition	16.81	***	1.15	n.s.	10.22	**	765.8	***	46.62	***
Cultivar × condition	0.73	n.s.	1.89	n.s.	3.65	*.	0.69	n.s.	6.76	**

Comparison of means
Condition	Cultivar	Mean (g/gDW)	P0.1	Mean (%)	p0.1	Mean (MPa)	p0.1	Mean (MPa)	p0.1	Mean (mmol/kg)	p0.1
Control	NB	2.41	A	93	a	−0.14	C	−1.17	a	575	b
	TP	2.43	A	94	a	−0.15	Bc	−1.08	ab	592	b
	IR	2.66	A	92	a	−0.12	Ab	−0.96	b	381	a
	LC	2.61	A	95	a	−0.31	A	−0.71	c	648	b
Drought	NB	2.20	B	93	A	−0.30	A	−2.42	A	910	C
	TP	2.09	B	94	A	−0.25	A	−2.35	AB	824	BC
	IR	2.31	AB	95	A	−0.34	A	−2.29	AB	779	B
	LC	2.49	A	95	A	−0.25	A	−2.04	B	637	A

Means were compared by REGWQ-Test (α = 0.1), different letters behind the means values indicate significantly different groups. Data from one experiment, n = 5. n.s. = not significant, *p < 0.05, **p < 0.01, ***p < 0.001