Table I.
Total amount of volatiles, i.e. the sum of 23 selected odorous compounds (see Table II), emitted by seedlings of 31 maize inbred lines and the variety Delprim (laboratory standard) in response to injection of caterpillar regurgitant
| Line | Class (Cluster) | Amount
|
|
|---|---|---|---|
| Mean ± se | N | ||
| μg h−1 g−1 shoot dry weight | |||
| W401 | EAD (7) | 0.7 ± 0.2 a | 6 |
| F7 | EUF (10) | 0.9 ± 0.2 ab | 9 |
| MIS3a | LSC (5) | 1.9 ± 0.5 abc | 6 |
| F113 | EAD (7) | 2.9 ± 0.2 bcd | 6 |
| F752 | EUF (12) | 3.4 ± 0.9 bcd | 6 |
| MIS4ab | M13 (3) | 5.0 ± 0.7 cdef | 6 |
| F584 | RYD (9) | 5.7 ± 1.6 cdef | 5 |
| F284 | M13 (3) | 6.0 ± 2.5 cde | 6 |
| F292 | EAD (7) | 8.8 ± 2.1 defg | 6 |
| F591 | M13 (3) | 10.3 ± 1.1 defgh | 5 |
| CM174 | RYD (9) | 11.4 ± 3.7 defg | 6 |
| Co158 | M13 (3) | 11.4 ± 1.6 defghi | 6 |
| F618 | RYD (9) | 11.9 ± 2.6 defgh | 6 |
| F608 | M13 (3) | 12.3 ± 2.6 defgh | 6 |
| F670 | M13 (1) | 15.6 ± 4.6 efghij | 6 |
| A188 | M13 (3) | 15.8 ± 3.7 efghij | 6 |
| F252 | EAD (6) | 20.8 ± 3.7 fghij | 6 |
| F268 | EUF (11) | 21.0 ± 5.9 efghij | 6 |
| RYD2a | RYD (9) | 21.4 ± 3.4 ghij | 5 |
| F283 | EUF (10) | 23.4 ± 5.3 ghij | 5 |
| Ia5pop | 24.6 ± 7.3 fghij | 6 | |
| F2 | EUF (11) | 27.7 ± 3.9 ghij | 6 |
| F7001 | EUF (10) | 28.8 ± 8.2 ghij | 5 |
| Co255b | EUF (10) | 29.5 ± 5.4 ghij | 6 |
| A654 | M13 (1) | 38.6 ± 5.8 hij | 5 |
| C6 | 39.2 ± 3.4 hij | 6 | |
| Delprim | 42.5 ± 10.8 hij | 6 | |
| Io3a | M13 (2) | 44.9 ± 4.1 ij | 6 |
| Du101 | EUF (10) | 48.0 ± 4.9 j | 6 |
| F476 | RYD (9) | 50.2 ± 4.1 j | 6 |
| Io4a | M13 (2) | 51.1 ± 8.9 j | 6 |
| F1852 | M13 (1) | 54.2 ± 7.3 j | 6 |
Lines with the same letter are not significantly different at the 1% level according to the Bonferroni/Dunn posthoc test (ANOVA with ln-transformed values: F = 30.3; degrees of freedom = 31; P < 0.0001). Classes and clusters defined according to a dendrogram obtained by cluster analysis of RFLP markers (Dubreuil et al., 1996): EAD, Early Dent; EUF, European Flint; LSC, Lancaster Sure Crop; M13, Minnesota 13 complex; RYD, Reid Yellow Dent.
Private lines, names changed.
Lines derived from crosses between lines tracing back to two different heterotic groups.