Feeding behavior, fecundity, and honeydew production of two biotypes of greenbug (Homoptera: Aphididae) on resistant and susceptible wheat

Electronically monitored feeding behavior, reproduction, and honeydew production of greenbug, Schizaphis graminum (Rondani), biotypes C (GBC) and E (GBE) were studied on three genotypes of wheat, Triticum aestivum L. We studied resistant and susceptible plants to determine how host-plant genotype alters greenbug feeding behavior and honeydew production on wheat and the relationship between feeding behavior and greenbug resistance. The data suggest that the greenbug's ability to damage its host plant may allow it to more quickly accept nutritionally enriched phloem sap associated with feeding damage and may result in production of larger, more fecund greenbugs.