Table 4 Chemical composition of essential oils extracted from Lavandula angustifolia cv. Hidcote plants under different irrigation regime.

No	Compound	RI¹	Area %
No	Compound	RI¹	I₁	I₂	I₃	I₄
1	α-thujene	926	0.26	–	–	0.25
2	α-Pinene	933	2.01	–	2.80	0.95
3	Camphene	948	1.21	1.78	2.10	2.48
4	Sabinene	971	0.34	0.28	0.26	–
5	β-Pinene	977	0.74	0.45	0.30	–
6	δ-3-Carene	1011	3.02	2.92	1.80	0.89
7	m-Cymene	1022	–	–	–	–
8	p-Cymene	1024	2.44	1.78	1.27	0.93
9	O-Cymene	1025	2.06	1.65	-	0.56
10	1,8-Cineol	1032	5.94	7.73	4.24	3.5
11	Linalool	1102	23.20	16.30	11.90	10.57
12	Camphor	1145	3.41	4.65	2.32	2.87
13	Borneol	1170	4.89	3.34	3.65	3.01
14	Bornyl formate	1227	27.32	16.04	19.45	20.03
15	Linalyl acetate	1259	–	2.64	0.76	2.47
16	Lavandulyl acetate	1290	1.40	4.21	6.00	8.35
17	Myrtenyl acetate	1341	0.83	1.16	1.26	1.36
18	α-Santalene	1419	2.50	2.30	1.56	1.67
19	Caryophyllene	1430	–	–	–	0.56
20	trans-β-Bergamotene	1436	1.68	0.76	1.12	0.46
21	γ-Cadinene	1514	1.34	–	1.88	1.56
22	Caryophyllene oxide	1584	10.92	11.77	16.12	19.91
23	α-Muurolene	1643	4.38	3.02	1.21	–
	Total		99.89	82.78	81.09	82.58
	Monoterpene Hydrocarbons		12.08	8.86	8.53	6.06
	Oxygenated Monoterpene		64.76	50.70	43.32	42.45
	Sesquiterpene Hydrocarbons		12.13	11.45	13.03	13.96
	Oxygenated sesquiterpenes		10.92	11.77	16.21	19.91

1. Retention Index, I₁, 100–90% of field capacity (control)-Irrigation Regime 1; I₂, 80–70% of field capacity-Irrigation Regime 2; I₃, 60–50% of field capacity-Irrigation Regime 3; I₄, 30–40% of field capacity-Irrigation Regime 4.

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