Individual maize VOCs

Day (n = 4)

Dusk (n = 4)

Night (n = 4)

Dawn (n = 4)

Kruskal-Wallis

Relative amount (%)

RI

VOCs

Mean ± SE

O

Mean ± SE

O

Mean ± SE

O

Mean ± SE

O

Chi²

p-value

Green leaf volatiles

860

Cis-3-hexenol [8] [9] [13] [20] ^*

rt/MS

6.82 ± 5.35

2

20.58 ± 3.31

4

6.86

1

9.11

1

3.366

0.339

1007

Cis-3-hexenyl acetate

[8] [9] [13] [28] [29] ^*

rt/MS

-

1.15 ± 0.48

3

3.28 ± 2.61

3

-

8.454

0.038

1209

MeSA [9] [13] [20] [29] ^*

rt/MS

27.92 ± 11.21

4

12.30 ± 0.77

4

18.13 ± 3.14

4

34.15 ± 4.22

4

6.199

0.102

Monoterpenes

942

α-pinene [13] [29] ^*

rt/MS

4.20 ± 3.04

2

4.08 ± 1.76

3

8.12 ± 3.21

3

12.91 ± 4.76

3

3.295

0.348

993

β-myrcene [8] [13] [20] ^*

rt/MS

0.25

1

-

-

-

3.000

0.392

1017

3-carene^*

rt/MS

-

-

2.85 ± 1.67

2

1.71

1

3.845

0.279

1032

p-cymene^*

rt/MS

6.92 ± 5.2

3

7.05 ± 2.75

2

11.09 ± 2.86

4

12.55 ± 1.95

4

4.993

0.172

1038

Limonene^*

rt/MS

4.54 ± 2.94

3

4.96 ± 3.23

2

18.02 ± 9.6

3

13.22 ± 5.68

3

2.568

0.463

1098

α-linalool [8] [9] [13] [28] [29] ^*

rt/MS

-

-

-

-

-

-

Homoterpenes

1117

DMNT [8] [13] [20] ^*

rt/MS

2.29

1

1.77 ± 0.11

4

0.92 ± 0.5

3

0.02

1

6.058

0.109

1128

TMTT [8] [28]

rt/MS

0.77 ± 0.77

2

-

-

-

6.400

0.094

Sesquiterpenes

1395

α-copaene [9] [13] ^*

rt/MS

22.01 ± 9.47

3

33.65 ± 6.18

4

30.7 ± 9.68

4

16.29 ± 7.02

3

3.474

0.324

1415

Ylangene [9] [28]

NIST

0.46

1

-

-

-

3.000

0.392

1450

Trans-α-bergamotene

[8] [20] [28] [30]

NIST

2.30 ± 1.76

2

5.27 ± 0.09

4

-

-

10.252

0.017

1452

β-caryophyllene

[8] [9] [13] [20] [28] -[30] ^*

rt/MS

1.37

1

-

-

-

3.000

0.392

1464

β-farnesene

[8] [9] [13] [20] [28] [30] ^*

rt/MS

0.10

1

0.02

1

-

-

2.150

0.542

1516

GermacreneD [9] [28] [30] ^*

rt/MS

0.46

1

-

-

-

3.000

0.392

1527

γ-cadinene [13] [30]

rt/MS

-

1.25

1

-

-

3.000

0.392

1535

δ-cadinene [13] [30]

rt/MS

0.47

1

2.57 ± 1.48

2

-

-

4.604

0.203

1544

Selina-3,7 (11) diene

NIST

0.42

1

-

-

3.000

0.392

1549

α-cadinene [13] [30]

rt/MS

0.43

1

5.28 ± 0.17

4

-

-

12.913

0.005

1592

Trans-nerolidol [8] [13] [20] [28]

rt/MS

18.20 ± 11.48

2

3.27

1

-

-

4.604

0.203