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Figure 1


Fig. 1. Comparison of typical response profiles for R. pomonella parent and hybrid ORNs from (A) class A (1-octen-3-ol responders) (B) class B (hexyl butanoate or dihydro-ß-ionone responders) and (C) class C (4,8-dimethyl-1,3(E),7-nonatriene responders). Parent data was obtained previously (Olsson et al., 2006a). Bar charts indicate spike frequencies (spikes s-1) for the 500 (hybrid) and 600 ms (parent) following initial exposure to 10 µg of each volatile listed at the bottom of the figure. The first 2 s of the 10.5 s recordings from which these frequencies were obtained is shown below each chart with chart ticks demarcating corresponding traces. Lines under the first trace indicate location of stimulus delivery for subsequent traces. In A, the parent ORN is specific to 1-octen-3-ol, whereas the hybrid ORN (dogwood x apple) responds to 1-octen-3-ol along with hexyl butanoate and isoamyl acetate. The B parent cell is specific to hexyl butanoate whereas the hybrid cell (apple x hawthorn) also responds to butyl butanoate. Finally, in C, the parent ORN is specific to 4,8-dimethyl-1,3(E),7-nonatriene, whereas the hybrid ORN (dogwood x apple) also responds to dihydro-ß-ionone, isoamyl acetate and 1-octen-3-ol.





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