Brown planthopper: Nilaparvata lugens, resistance in rice cultivar IR64: mechanism and role in successful N. lugens management in central Luzon, Philippines

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dc.creatorCohen, Michael B.
dc.creatorAlam, Syed N.
dc.creatorMedina, Edith B.
dc.creatorBernal, Carmencita C.
dc.date1997-12
dc.date2024-12-19T12:56:42Z
dc.date2024-12-19T12:56:42Z
dc.date.accessioned2026-06-27T04:15:38Z
dc.descriptionWe investigated the mechanism of brown planthopper, Nilaparvata lugens (Stål), resistance in the popular rice cultivar IR64, and the current level of resistance of IR64 to N. lugens in a large rice growing area with low brown planthopper populations (Central Luzon, Philippines). In greenhouse experiments with N. lugens populations collected from Central Luzon, IR64 showed slight to moderate levels of antibiosis, antixenosis, and tolerance relative to the cultivars IR22 and Azucena, which contain no major genes for N. lugens resistance. IR64 was also more resistant than IR26 in most experiments, despite the fact that both varieties have the same major gene for N. lugens resistance, Bph1. This confirms that IR64 contains one or more additional, apparently minor, genes for brown planthopper resistance. Our findings also demonstrate that, in an area with low insecticide use, it is not necessary to have high levels of N. lugens resistance, even in a rice cultivar grown by the majority of farmers, to maintain low and stable N. lugens populations.
dc.identifierhttps://hdl.handle.net/10568/166828
dc.identifier.urihttp://hdl.handle.net/123456789/26892
dc.languageen
dc.publisherWiley
dc.sourceCohen, Michael B.; Alam, Syed N.; Medina, Edith B. and Bernal, Carmencita C. 1997. Brown planthopper: Nilaparvata lugens, resistance in rice cultivar IR64: mechanism and role in successful N. lugens management in central Luzon, Philippines. Entomologia Exp Applicata, Volume 85 no. 3 p. 221-229
dc.subjectnilaparvata lugens
dc.subjectvarietal resistance
dc.subjectfecundity
dc.subjectfeeding frequency
dc.subjectsurvival
dc.subjectphilippines
dc.titleBrown planthopper: Nilaparvata lugens, resistance in rice cultivar IR64: mechanism and role in successful N. lugens management in central Luzon, Philippines
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)