Table 1.

Results of statistical analysis by GLM of shoot and root dry weight, shoot:root ratio and shoot water content of rice plants from four cultivars grown under control and drought stress (condition) in three independent experiments

GLM	Shoot dry weight		Root dry weight		Shoot:root ratio		Shoot water content
Transformation	Log		Log		None		None
	F	p	F	p	F	p	F	p
Model	49.39	***	55.3	***	11.63	***	162.73	***
Condition	337.36	***	297.11	***	23.86	***	1322.57	***
Cultivar	23.59	***	21.35	***	1.39	n.s.	42.13	***
Condition × Cultivar	0.08	n.s.	4.52	0.051	2.55	0.06	2.43	0.069
Experiment	13.13	***	57.52	***	32.33	***	4.83	**

Comparison of means
Condition	Cultivar	Mean (g)		Mean (g)		Mean		Mean (g water/g DW)
Control	NB	1.63	b	0.40	c	4.61	a	4.79	c
	TP	1.91	b	0.51	c	4.90	a	5.01	bc
	IR	3.59	a	1.54	a	2.75	b	5.23	b
	LC	2.97	a	0.69	b	4.46	a	5.96	a
Drought	NB	0.46	B	0.11	B	6.19	A	2.67	B
	TP	0.50	B	0.12	B	6.22	A	2.62	B
	IR	0.84	A	0.16	A	6.74	A	2.73	B
	LC	0.76	A	0.17	A	5.54	A	3.36	A

Means comparison within a treatment level was performed using REGWQ-test (alpha = 0.1), different letters behind mean values indicate significantly different groups. Degrees of freedom for GLM 97–109, n for comparison of means: 12 to 15. n.s. = not significant, **p < 0.01, ***p < 0.001