GC-EAD active compounds: (1) n-tricosane; (2) 3-methyl tricosane
; (3) unknown; (4) n-pentacosane; (5) 13-methyl pentacosane; (6) n-heptacosane; (7) 13,15-dimethyl heptacosane.
The presence of tricosane
in pigeon pea, hexadecane and octacosane in marigold and octacosane in tomato was presumably responsible for the differential response (Madhu et al., 2000).
4) (Table 4): 1) Heneicosane (C21), 2) Linoleic acid (possible contaminat), 3) Docosane (C22), 4) Tricosane
(C23), 5) Tetracosane (C24), 6) Pentacosane (C25), C) phthalate 7) Hexacosane (C26), 8) Heptacosane (C27), 9) Octacosane (C28), 10) Nonacosane (C29), 11) Triacontane (C30) and 12) Hentriacontane (C31) and Dotriacontane (C32).
These baits were made of cotton wadding soaked with one of the following substances, known or believed to be attractive to orchid bees: benzyl acetate, benzyl alcohol, r-carvone, 1,8-cineole, p-cresol acetate, dimethoxybenzene, eugenol, [beta]-ionone, methyl benzoate, methyl tran.v-cinnamatc, heneicosane, methyl salicylate, skatole, tricosane
, p-tolyl acetate, vanillin, and a mixture (1:1) of methyl transcinnamate and p-tolyl acetate.