Research Article
Volatile Organic Compounds from the Clone Populus x canadensis “Conti” Associated with Megaplatypus mutatus Attack
Figure 2
(a) Typical GC trace of volatile organic compounds emitted by nonattacked Populus x canadensis clone “Conti 12” (1: Salicylic aldehyde**, 2: α-copaene***, 3: β-elemene**, 4: N.I., 5: β-chamigrene**, 6: β-selinene**, 7: α-selinene**, 8: N.I., 9: aldehyde of , 10: N.I., and 11: N.I.). **: Tentatively identified against GC-MS library, ***: identified against authentic standard, and N.I.: nonidentified. (b) Typical GC trace of volatile organic compounds emitted by attacked Populus x canadensis clone “Conti 12” (1: salicylic aldehyde**, 2: α-ylangene**, 3: α-copaene***, 4: β-elemene**, 5: N.I., 6: β-cubebene**, 7: α-gurjunene**, 8: β-selinene**, 9: α-selinene**, 10: δ-cadinene**, 11: N.I., 12: aldehyde of , 13: aldehyde of , 14: N.I., and 15: N.I.). **: Tentatively identified against library, ***: identified against authentic standard, and N.I.: nonidentified.
