Brown planthopper: Nilaparvata lugens, resistance in rice cultivar IR64: mechanism and role in successful N. lugens management in central Luzon, Philippines
We 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 experi...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
1997
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/166828 |
| _version_ | 1855541490032312320 |
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| author | Cohen, Michael B. Alam, Syed N. Medina, Edith B. Bernal, Carmencita C. |
| author_browse | Alam, Syed N. Bernal, Carmencita C. Cohen, Michael B. Medina, Edith B. |
| author_facet | Cohen, Michael B. Alam, Syed N. Medina, Edith B. Bernal, Carmencita C. |
| author_sort | Cohen, Michael B. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | We 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. |
| format | Journal Article |
| id | CGSpace166828 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1997 |
| publishDateRange | 1997 |
| publishDateSort | 1997 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1668282025-02-19T14:27:01Z Brown planthopper: Nilaparvata lugens, resistance in rice cultivar IR64: mechanism and role in successful N. lugens management in central Luzon, Philippines Cohen, Michael B. Alam, Syed N. Medina, Edith B. Bernal, Carmencita C. nilaparvata lugens varietal resistance fecundity feeding frequency survival philippines We 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. 1997-12 2024-12-19T12:56:42Z 2024-12-19T12:56:42Z Journal Article https://hdl.handle.net/10568/166828 en Wiley Cohen, 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 |
| spellingShingle | nilaparvata lugens varietal resistance fecundity feeding frequency survival philippines Cohen, Michael B. Alam, Syed N. Medina, Edith B. Bernal, Carmencita C. Brown planthopper: Nilaparvata lugens, resistance in rice cultivar IR64: mechanism and role in successful N. lugens management in central Luzon, Philippines |
| title | Brown planthopper: Nilaparvata lugens, resistance in rice cultivar IR64: mechanism and role in successful N. lugens management in central Luzon, Philippines |
| title_full | Brown planthopper: Nilaparvata lugens, resistance in rice cultivar IR64: mechanism and role in successful N. lugens management in central Luzon, Philippines |
| title_fullStr | Brown planthopper: Nilaparvata lugens, resistance in rice cultivar IR64: mechanism and role in successful N. lugens management in central Luzon, Philippines |
| title_full_unstemmed | Brown planthopper: Nilaparvata lugens, resistance in rice cultivar IR64: mechanism and role in successful N. lugens management in central Luzon, Philippines |
| title_short | Brown planthopper: Nilaparvata lugens, resistance in rice cultivar IR64: mechanism and role in successful N. lugens management in central Luzon, Philippines |
| title_sort | brown planthopper nilaparvata lugens resistance in rice cultivar ir64 mechanism and role in successful n lugens management in central luzon philippines |
| topic | nilaparvata lugens varietal resistance fecundity feeding frequency survival philippines |
| url | https://hdl.handle.net/10568/166828 |
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