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Preferences of mated Heliothis virescens and H. subflexa females fo r host and nonhost volatiles in a flight tunnel
- Tingle, F.C., Mitchell, E.R., Heath, R.R.
- Journal of chemical ecology 1990 v.16 no.10 pp. 2889
- Heliothis virescens, Heliothis subflexa, insect attractants, Physalis, Desmodium, Gossypium hirsutum, Nicotiana tabacum, plant extracts, volatile compounds, bioassays, wind tunnels, pest resistance, plant-insect relations
- In flight-tunnel bioassays, mated female Heliothis subflexa (Gn.) moths demonstrated in dual-choice tests a significant preference for volatiles from an extract of their only known host, Physalis spp. (groundcherry). However, H. virescens (F.), a polyphagous species, responded positively by anemotaxis to extracts from susceptible tobacco, cotton. Desmodium tortuosum (host plants), and groundcherry, a nonhost. H. virescens females did not fly to volatiles emanating from an extract of a resistant tobacco cultivar.