Time-Course Comparative Metabolite Profiling under Osmotic Stress in Tolerant and Sensitive Tibetan Hulless Barley

Table 1

Classification of the 679 detected metabolites in hulless barley accessions into major classes.

Groups	Number of Compounds detected	Groups	Number of Compounds detected
Phenolamides	31	Amino acid derivatives	57
Coumarins	14	Alkaloids	6
Quinate and its derivatives	20	Phytohormones	19
Carbohydrates	15	Glycerolipids	18
Flavone	58	Glycerophospholipids	35
Lipids fatty acids	19	Nucleotide and its derivatives	55
Flavone C-glycosides	43	Indole derivatives	9
Others	31	Amino acids	28
Flavonol	24	Anthocyanins	4
Nicotinic acid derivatives	4	Vitamins	17
Tryptamine derivatives	9	Benzoic acid derivatives	13
Organic acids	66	Terpenoids	4
Cholines	5	Catechin derivatives	3
Flavonolignan	10	Flavanone	19
Hydroxycinnamoyl derivatives	30	Alcohols and polyols	4
Pyridine derivatives	2	Isoflavone	7