Figure 3.

Proportion of male H. armigera selecting linalool (of total number of moths selecting either linalool or β-caryophyllene) following conditioning on N. tabacum, pure linalool, pure β-caryophyllene or after no conditioning. Numbers of moths responding to odours after training (total number trained in parentheses) are presented under conditioning treatments (not applicable for no conditioning trial). Symbols within bars denote whether proportions were significantly different from 0.5 (equal preference; ^**p<0.001; ^*p<0.05; n.s., not significant). Between treatment differences are displayed above bars.