Recurrent selection in a synthetic brachiariagrass population improves resistance to three spittlebug species
Spittlebugs (Homoptera: Cercopidae) are important pests of forage grasses in the genus Brachiaria (Trin.) Griseb. throughout the neotropics. Results of recurrent selection on resistance to spittlebugs in a synthetic brachiariagrass population are reported. The population was synthesized by recombini...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2006
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/44015 |
| _version_ | 1855526193010311168 |
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| author | Miles, John W. Cardona Mejía, César Sotelo, Guillermo |
| author_browse | Cardona Mejía, César Miles, John W. Sotelo, Guillermo |
| author_facet | Miles, John W. Cardona Mejía, César Sotelo, Guillermo |
| author_sort | Miles, John W. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Spittlebugs (Homoptera: Cercopidae) are important pests of forage grasses in the genus Brachiaria (Trin.) Griseb. throughout the neotropics. Results of recurrent selection on resistance to spittlebugs in a synthetic brachiariagrass population are reported. The population was synthesized by recombining sexual hybrids obtained from crosses between a tetraploidized sexual ruzigrass (B. ruziziensis Germain & Evrard) biotype and nine natural apomictic tetraploid accessions of signalgrass (B. decumbens Stapf) and palisadegrass [B. brizantha (A. Rich.) Stapf]. The first three selection cycles were on resistance to a single Colombian spittlebug species [Aeneolamia varia (F.)], and the final two cycles simultaneously on resistance to A. varia and to two additional Colombian spittlebug species [A. reducta (Lallemand) and Zulia carbonaria (Lallemand)]. Selection was based on survival of spittlebug nymphs feeding on artificially infested, greenhouse-grown plants. From C2 to C6, mean survival of A. varia nymphs on selected genotypes dropped from 55.6 to 7.0%. Tetraploid sexual clones with combined high levels of resistance to all three spittlebug species have been obtained. The effectiveness of this resistance against spittlebug species not occurring in Colombia needs to be determined, and its expression in crosses with spittlebug-susceptible, apomictic genotypes needs to be assessed. |
| format | Journal Article |
| id | CGSpace44015 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace440152024-08-27T10:36:01Z Recurrent selection in a synthetic brachiariagrass population improves resistance to three spittlebug species Miles, John W. Cardona Mejía, César Sotelo, Guillermo feed crops brachiaria hybrids plant breeding recurrent selection genetic resistance zulia (insect) aeneolamia cercopidae injurious insects híbridos fitomejoramiento selección recurrente resistencia genética zulia (insecto) Spittlebugs (Homoptera: Cercopidae) are important pests of forage grasses in the genus Brachiaria (Trin.) Griseb. throughout the neotropics. Results of recurrent selection on resistance to spittlebugs in a synthetic brachiariagrass population are reported. The population was synthesized by recombining sexual hybrids obtained from crosses between a tetraploidized sexual ruzigrass (B. ruziziensis Germain & Evrard) biotype and nine natural apomictic tetraploid accessions of signalgrass (B. decumbens Stapf) and palisadegrass [B. brizantha (A. Rich.) Stapf]. The first three selection cycles were on resistance to a single Colombian spittlebug species [Aeneolamia varia (F.)], and the final two cycles simultaneously on resistance to A. varia and to two additional Colombian spittlebug species [A. reducta (Lallemand) and Zulia carbonaria (Lallemand)]. Selection was based on survival of spittlebug nymphs feeding on artificially infested, greenhouse-grown plants. From C2 to C6, mean survival of A. varia nymphs on selected genotypes dropped from 55.6 to 7.0%. Tetraploid sexual clones with combined high levels of resistance to all three spittlebug species have been obtained. The effectiveness of this resistance against spittlebug species not occurring in Colombia needs to be determined, and its expression in crosses with spittlebug-susceptible, apomictic genotypes needs to be assessed. 2006-05 2014-10-02T08:33:06Z 2014-10-02T08:33:06Z Journal Article https://hdl.handle.net/10568/44015 en Limited Access Wiley Miles J.W.; Cardona, C. and Sotelo, G. (2006). Recurrent Selection in a Synthetic Brachiariagrass Population Improves Resistance to Three Spittlebug Species. Crop Science (46): 1088 –1093 |
| spellingShingle | feed crops brachiaria hybrids plant breeding recurrent selection genetic resistance zulia (insect) aeneolamia cercopidae injurious insects híbridos fitomejoramiento selección recurrente resistencia genética zulia (insecto) Miles, John W. Cardona Mejía, César Sotelo, Guillermo Recurrent selection in a synthetic brachiariagrass population improves resistance to three spittlebug species |
| title | Recurrent selection in a synthetic brachiariagrass population improves resistance to three spittlebug species |
| title_full | Recurrent selection in a synthetic brachiariagrass population improves resistance to three spittlebug species |
| title_fullStr | Recurrent selection in a synthetic brachiariagrass population improves resistance to three spittlebug species |
| title_full_unstemmed | Recurrent selection in a synthetic brachiariagrass population improves resistance to three spittlebug species |
| title_short | Recurrent selection in a synthetic brachiariagrass population improves resistance to three spittlebug species |
| title_sort | recurrent selection in a synthetic brachiariagrass population improves resistance to three spittlebug species |
| topic | feed crops brachiaria hybrids plant breeding recurrent selection genetic resistance zulia (insect) aeneolamia cercopidae injurious insects híbridos fitomejoramiento selección recurrente resistencia genética zulia (insecto) |
| url | https://hdl.handle.net/10568/44015 |
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