Table 3. Volatiles from Las-infected and non-infected citrus plants presented as average percentage ±1 standard error (SE) of n-octane equivalents of volatile organic compounds collected from plants' headspace.
| Compound | RT | CAS#* | Uninfected (Mean % ± SE) | Las-infected (Mean % ± SE) | t-value (df) | P-value |
| Sabiene | 7.94 | 3387-41-5 | 11.0±2.54 | 15.0±0.67 | −0.55 (8) | 0.60 |
| β-pinene | 8.01 | 127-91-3 | 0.01±0.001 | 0.01±0.001 | −0.135 (8) | 0.90 |
| Myrcene | 8.2 | 123-35-3 | 3.0±0.44 | 3.0±0.23 | 0.27 (8) | 0.79 |
| 3-Carene | 8.57 | 13466-78-9 | 5.0±1.09 | 2.0±0.08 | 1.12 (8) | 0.39 |
| D-limonene | 8.71 | 5989-27-5 | 59.0±3.18 | 27.0±0.79 | 3.67 (8) | 0.01 * |
| β-ocimene | 8.95 | 502-99-8 | 6.0±1.01 | 6.0±0.5 | −0.30 (8) | 0.77 |
| Linalool | 9.83 | 78-70-6 | 2.0±0.56 | 1.0±0.11 | 0.48 (8) | 0.65 |
| Menthatriene (1,3,8-para) | 10.14 | 18368-95-1 | 0.01±0.001 | 4.0±0.25 | −2.21 (8) | 0.06 |
| Methyl salicylate | 11.01 | 119-36-8 | 1.0±0.21 | 39.0±2.86 | −3.06 (8) | 0.02 * |
| Geranial | 12.21 | 141-27-5 | 2.0±0.45 | 0.0±0.0 | 2.10 (8) | 0.07 |
| Methyl anthranilate | 13.9 | 134-20-3 | 12.0±1.25 | 0.01±0.05 | 3.24 (8) | 0.01 * |
| Caryophyllene | 14.45 | 87-44-5 | 0.01±0.02 | 3.0±0.22 | −2.06 (8) | 0.07 |
Each compound is characterized by its retention time (RT) and major ion.
Bold values indicate a significant difference between treatments (P<0.05). The chemicals which were present in different proportions between Las-infected and non-infected citrus plants are shown. Identification was based on comparisons of retention times with standard and spectral data from Adams, EPA, Nist05 Libraries and synthetic standard comparison.
*: CAS #: Chemical Abstract Service number.