Table 1.

Relative concentration and the fold changes of the major metabolites in the grains of the different barley genotypes under water stress.

Metabolites	Relative concentration of the major metabolites								Fold change
	XZ5		XZ147		TL43		Triumph		log2(drought/control)
	Control	Drought	Control	Drought	Control	Drought	Control	Drought	XZ5	XZ147	TL43	Triumph
Maltose	0.19	0.14	0.03	0.05	0.04	0.07	0.04	0.07	-0.48**	0.85	0.81	0.78
Fructose	14.78	45.17	32.96	55.54	8.16	13.90	13.17	30.28	1.61**	0.75**	0.77**	1.20**
Sucrose	3.27	4.41	3.76	5.42	3.79	4.15	3.98	4.93	0.43**	0.53**	0.13	0.31**
Mannitol	8.41	29.96	13.34	42.27	5.07	21.29	10.02	52.06	1.83**	1.66**	2.07**	2.38**
Myo-inositol	13.25	16.03	21.23	16.04	9.43	11.91	11.10	14.47	0.27**	-0.40**	0.34**	0.38**
Xylitol	9.04	3.17	19.86	1.47	20.94	48.95	25.41	27.47	-1.51	-3.75**	1.22**	0.11
Xylose	0.90	0.32	0.25	0.06	0.28	0.04	0.16	0.13	-1.49**	-2.20**	-2.65**	-0.28
Citric acid	4.46	26.98	6.65	13.95	6.32	5.78	7.63	11.84	2.60**	1.07**	-0.13	0.63**
Fumaric acid	0.49	2.69	0.62	1.18	0.68	0.76	0.67	1.42	2.44**	0.92**	0.15	1.08**
2-Ketoglutaric acid	4.66	1.72	3.69	1.48	1.87	1.85	2.44	1.98	-1.44**	-1.32**	-0.02	-0.30**
Malic acid	68.12	77.74	48.14	52.43	46.09	40.97	50.07	61.86	0.19**	0.12**	-0.17**	0.31**
Succinic acid	1.36	5.24	2.56	4.59	1.47	1.93	1.62	3.06	1.95**	0.84**	0.40**	0.92**
Threonic acid	0.20	1.12	0.45	0.92	0.29	0.31	0.36	1.69	2.50**	1.04**	0.09	2.24**
beta-Alanine	0.21	1.04	0.46	1.04	0.36	0.97	0.56	1.25	2.28**	1.17**	1.41**	1.16**
L-Asparagine	20.69	294.18	69.48	239.50	37.40	65.04	42.64	99.10	3.83**	1.79**	0.80**	1.22**
L-Glutamic acid	1.22	14.42	4.97	15.00	3.01	9.37	4.27	12.25	3.57**	1.59**	1.64**	1.52**
L-Glutamine	0.57	43.67	8.01	36.62	3.83	17.01	4.92	18.25	6.27**	2.19**	2.15**	1.89**
L-Glysine	0.77	17.00	4.32	17.03	3.29	9.37	2.58	11.81	4.47**	1.98**	1.51**	2.19**
L-Isoleucine	0.61	3.37	2.08	3.17	1.35	3.30	1.82	4.51	2.46**	0.61**	1.29**	1.31**
L-Leucine	0.49	3.47	1.84	2.58	0.86	2.40	1.27	3.65	2.84**	0.48	1.48**	1.52**
L-Lysine	5.37	15.20	4.46	17.03	3.63	9.37	2.58	11.81	1.50**	1.93**	1.37**	2.19**
L-Proline	6.98	43.17	36.81	82.47	13.08	33.06	21.30	63.10	2.63**	1.16**	1.34**	1.57**
L-Serine	0.84	14.25	3.75	14.84	2.12	5.78	2.63	11.13	4.09**	1.98**	1.45**	2.08**
L-Threonine	1.17	8.07	3.80	8.52	2.73	5.89	3.20	8.85	2.79**	1.16**	1.11**	1.47**
L-Valine	1.42	8.59	4.66	11.47	2.34	5.85	4.93	12.62	2.60**	1.30**	1.32*	1.36**
Putrescine	0.13	0.72	0.34	0.80	0.14	0.27	0.15	0.50	2.45**	1.22**	0.94**	1.70**
Pyroglutamic acid	3.55	87.87	20.49	87.42	9.27	39.87	13.30	63.41	4.63**	2.09**	2.10**	2.25**