Table 2.

Analysis of variance of volatile compounds: significance levels of main effects and interactions.

Codea	Volatile compound	CAS #	RIb	RIc	Genotype	Stage	Genotype × Stage
Esters
E1	Methyl acetate	79-20-9	555	559	<0.0001	0.7921	0.0076
E2	Ethyl acetate	141-78-6	605	605	<0.0001	0.0278	0.455
E3	Methyl propanoate	554-12-1	625	621	<0.0001	0.0605	0.0435
E4	Isopropyl acetate	108-21-4	655	648	0.0003	0.0531	<0.0001
E5	Methyl isobutyrate	547-63-7	685	690	<0.0001	0.7914	0.9174
E6	Ethyl propanoate	105-37-3	710	708	<0.0001	0.4105	<0.0001
E7	Propyl acetate	109-60-4	706	707	<0.0001	<0.0001	0.4756
E8	Methyl butanoate	623-42-7	717	717	<0.0001	0.3588	0.4305
E9	Ethyl isobutyrate	97-62-1	761	751	0.0001	0.4036	0.6237
E10	Isobutyl acetate	110-19-0	764	768	<0.0001	0.0066	0.1016
E11	Methyl 2-methylbutanoate	868-57-5	772	772	<0.0001	0.0084	0.9024
E12	Ethyl butanoate	105-54-4	804	803	<0.0001	0.0139	0.0025
E13	Propyl propanoate	106-36-5	807	807	<0.0001	0.6079	0.8905
E14	Butyl acetate	123-86-4	812	812	<0.0001	<0.0001	0.4945
E15	Isopropyl butanoate	638-11-9	837	837	<0.0001	0.062	<0.0001
E16	Ethyl 2-methylbutyrate	7452-79-1	849	846	0.0023	0.0283	0.0039
E17	2-Methylpropyl propanoate	540-42-1	862	863	<0.0001	0.3087	0.0334
E18	2-Methylbutyl acetate	624-41-9	876	877	<0.0001	<0.0001	0.3621
E19	Propyl butanoate	105-66-8	896	897	<0.0001	0.1208	0.2919
E20	Butyl propanoate	590-01-2	908	907	<0.0001	0.0569	0.0018
E21	Pentyl acetate	628-63-7	911	912	<0.0001	0.2106	0.0668
E22	3-Methyl-2-butenyl acetate	1191-16-8	920	918	<0.0001	0.2384	0.3024
E23	Methyl hexanoate	106-70-7	925	922	0.0003	0.3634	0.0022
E24	Propyl 2-methylbutanoate	37064-20-3	943	943	<0.0001	0.1102	0.4075
E25	2-Methylpropyl butanoate	539-90-2	955	953	<0.0001	0.1484	0.0154
E26	Pentyl propanoate	624-54-4	969	968	<0.0001	0.0357	<0.0001
E27	Ethyl hexanoate	123-66-0	1000	999	0.0858	0.0215	0.0184
E28	(Z)-3-Hexenyl acetate	3681-71-8	1007	1004	<0.0001	<0.0001	0.2486
E29	Hexyl acetate	142-92-7	1012	1011	<0.0001	0.0095	0.4239
E30	2,3-Butanediol diacetate	1114-92-7	1054	1064	<0.0001	0.0262	0.3695
E31	Methyl benzoate	93-58-3	1093	1091d	0.0378	0.4329	0.0932
	2-Methylbutyl isovalerate (IS)	2445-77-4	1108	1107
E32	Benzyl acetate	140-11-4	1164	1164	<0.0001	0.4713	0.1974
E33	Octyl acetate	112-14-1	1210	1213	<0.0001	0.4501	0.2671
E34	Phenethyl acetate	103-45-7	1258	1255	<0.0001	0.0338	0.0871
E35	3-Phenylpropyl acetate	122-72-5	1373	1373	<0.0001	0.6506	0.0258
Aldehydes
A1	Acetaldehyde	75-07-0	500	528	0.0052	0.0621	0.0002
A2	Propanal	123-38-6	552	554	<0.0001	0.0699	0.2725
A3	Pentanal	110-62-3	699	699	<0.0001	0.0943	0.4171
A4	Hexanal	66-25-1	801	801	<0.0001	0.0195	0.7514
A5	2-Butylfuran	4466-24-4	893	894 d	0.0044	0.3395	0.0172
A6	Heptanal	111-71-7	901	902	0.0026	0.3608	0.0107
A7	Benzaldehyde	100-52-7	960	962	<0.0001	0.7105	0.0007
A8	2-Pentylfuran	3777-69-3	993	989	<0.0001	0.3456	0.9622
A9	Decanal	112-31-2	1206	1205	<0.0001	0.3111	<0.0001
Sulphur-compounds
S1	S-Methyl ethanethionate	1534-08-3	700	701	<0.0001	0.482	0.4988
S2	Dimethyl disulfide	624-92-0	738	748 d	<0.0001	0.0003	0.0016
S3	S-Methyl 3-methylbutanethioate	23747-45-7	938	938	<0.0001	0.003	0.0002
S4	Dimethyl trisulfide	3658-80-8	972	981 d	<0.0001	0.0002	0.0014
Terpenoids
T1	Limonene	138-86-3	1030	1029	<0.0001	0.3252	0.3159
T2	beta-Cytocitral	432-25-7	1220	1220	<0.0001	0.0571	0.7275
T3	alpha-Terpinyl acetate	80-26-2	1342	1350 d	<0.0001	0.0089	0.0994
T4	beta-Ionone	79-77-6	1486	1484	<0.0001	0.0699	0.5269
T5	Dihydroactinidiolide	17092-92-1	1537	1539 d	<0.0001	0.1329	0.7597
T6	1,8-Cineole	470-82-6	1032	1032	<0.0001	0.1154	<0.0001
Ketones
K1	Acetone	67-64-1	510	503 d	<0.0001	0.2922	0.7313
K2	Acetophenone	98-86-2	1065	1065 d	0.5156	0.0006	0.0141
Alkanes
L1	Dodecane	112-40-3	1200	1200	0.0301	0.4994	0.1801
L2	Tetradecane	629-59-4	1400	1400	0.0049	0.0519	0.1076
Alcohols
C1	Benzyl alcohol	100-51-6	1036	1033	<0.0001	0.7548	0.2827

Bold p-values indicate statistical significance (p ≤ 0.05).

IS: Internal standard.

^aCode used for labels in Fig. 2

^bRI: Retention indices calculated from the RT of a series of n-alkanes (C6–C20).

^cRI: Retention indices reported in the literature for DB-5MS capillary GC columns (Beaulieu & Grimm, 2001).

^dRI: Retention indices reported in Flavornet and NIST Library 14 for DB-5MS capillary GC column.