title: Effect of steam distillate extract of resistant wild riceOryza officinalis on behavior of brown planthopperNilaparvata lugens (Stal) (Homoptera: Delphacidae).
abstract: Rice plant volatiles extracted as steam distillates significantly affected the behavior of the brown planthopperNilaparvata lugens (Stal). In a choice test, significantly more females settled and fed on tillers of a susceptible rice variety, Taichung Native 1 (TN 1), sprayed with acetone or untreated TN 1 plants than on TN 1 tillers sprayed with the extracts of resistant wild riceOryza officinalis. O. officinalis steam distillate was highly toxic to first-instar nymphs ofN. lugens. Ingestion and assimilation of food by females was significantly reduced on TN 1 plants sprayed withO. officinalis distillate compared to TN 1 plants sprayed with acetone. Application of0. officinalis distillate on TN 1 plants adversely affected hatchability of eggs ofN. lugens.
authors.affiliation: Department of Agricultural Entomology, Tamil Nadu Agricultural University, 641 003, Coimbatore, India.
authors.forename: R
authors.initials: R
authors.lastname: Velusamy
authors.forename: B
authors.initials: B
authors.lastname: Thayumanavan
authors.forename: S
authors.initials: S
authors.lastname: Sadasivam
authors.forename: S
authors.initials: S
authors.lastname: Jayaraj