Realized genetic gain in spittlebugs (Hemiptera: Cercopidae) resistance and tolerance at CIAT's interspecific Urochloa breeding programme
The Interspecific Urochloa recurrent selection breeding programme at CIAT aims to integrate desirable traits such as resistance and tolerance to spittlebugs (Hemiptera: Cercopidae), the main insect pest affecting these pastures in Latin America. Eleven successive cycles of selection were screened fo...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2025
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/177056 |
| _version_ | 1855532244599308288 |
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| author | Hernandez, Luis Aparicio, Johan Espitia Buitrago, Paula Castiblanco, Valheria Jauregui, Rosa |
| author_browse | Aparicio, Johan Castiblanco, Valheria Espitia Buitrago, Paula Hernandez, Luis Jauregui, Rosa |
| author_facet | Hernandez, Luis Aparicio, Johan Espitia Buitrago, Paula Castiblanco, Valheria Jauregui, Rosa |
| author_sort | Hernandez, Luis |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The Interspecific Urochloa recurrent selection breeding programme at CIAT aims to integrate desirable traits such as resistance and tolerance to spittlebugs (Hemiptera: Cercopidae), the main insect pest affecting these pastures in Latin America. Eleven successive cycles of selection were screened for antibiosis and tolerance to Aeneolamia varia nymphs, measured as insect survivorship and plant damage, respectively. The rate of genetic gain was estimated as the slope of the linear function obtained by plotting the best linear unbiased estimates (BLUEs) using historical data across generations. The results show a rapid increase in antibiosis and tolerance to A. varia nymphs. Realized genetic gain for both traits was highly significant ( p < 0.01) and had a negative trend. The annual average rate of plant damage decreased by 2.36%, while insect survivorship decreased by 7.58%. The success in the continuous improvement for spittlebug resistance and tolerance can be explained by the fact that within a breeding cycle, parents are screened and selected based on their resistance and tolerance levels to spittlebug as part of the parental population improvement. |
| format | Journal Article |
| id | CGSpace177056 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1770562025-11-11T18:55:59Z Realized genetic gain in spittlebugs (Hemiptera: Cercopidae) resistance and tolerance at CIAT's interspecific Urochloa breeding programme Hernandez, Luis Aparicio, Johan Espitia Buitrago, Paula Castiblanco, Valheria Jauregui, Rosa genetic gain mejora genética breeding programmes feed grasses tolerance to pests tolerancia a las plagas gramínea forrajera plant damage daño vegetal antibiosis antibiosis The Interspecific Urochloa recurrent selection breeding programme at CIAT aims to integrate desirable traits such as resistance and tolerance to spittlebugs (Hemiptera: Cercopidae), the main insect pest affecting these pastures in Latin America. Eleven successive cycles of selection were screened for antibiosis and tolerance to Aeneolamia varia nymphs, measured as insect survivorship and plant damage, respectively. The rate of genetic gain was estimated as the slope of the linear function obtained by plotting the best linear unbiased estimates (BLUEs) using historical data across generations. The results show a rapid increase in antibiosis and tolerance to A. varia nymphs. Realized genetic gain for both traits was highly significant ( p < 0.01) and had a negative trend. The annual average rate of plant damage decreased by 2.36%, while insect survivorship decreased by 7.58%. The success in the continuous improvement for spittlebug resistance and tolerance can be explained by the fact that within a breeding cycle, parents are screened and selected based on their resistance and tolerance levels to spittlebug as part of the parental population improvement. 2025-09-11 2025-10-14T09:43:42Z 2025-10-14T09:43:42Z Journal Article https://hdl.handle.net/10568/177056 en Open Access application/pdf Wiley Hernandez, L.; Aparicio, J.; Espitia Buitrago, P.; Castiblanco, V.; Jauregui, R. (2025) Realized genetic gain in spittlebugs (Hemiptera: Cercopidae) resistance and tolerance at CIAT's interspecific Urochloa breeding programme. Plant Breeding, Online first paper(2025-09-11). p. 1-10. ISSN: 0179-9541 |
| spellingShingle | genetic gain mejora genética breeding programmes feed grasses tolerance to pests tolerancia a las plagas gramínea forrajera plant damage daño vegetal antibiosis antibiosis Hernandez, Luis Aparicio, Johan Espitia Buitrago, Paula Castiblanco, Valheria Jauregui, Rosa Realized genetic gain in spittlebugs (Hemiptera: Cercopidae) resistance and tolerance at CIAT's interspecific Urochloa breeding programme |
| title | Realized genetic gain in spittlebugs (Hemiptera: Cercopidae) resistance and tolerance at CIAT's interspecific Urochloa breeding programme |
| title_full | Realized genetic gain in spittlebugs (Hemiptera: Cercopidae) resistance and tolerance at CIAT's interspecific Urochloa breeding programme |
| title_fullStr | Realized genetic gain in spittlebugs (Hemiptera: Cercopidae) resistance and tolerance at CIAT's interspecific Urochloa breeding programme |
| title_full_unstemmed | Realized genetic gain in spittlebugs (Hemiptera: Cercopidae) resistance and tolerance at CIAT's interspecific Urochloa breeding programme |
| title_short | Realized genetic gain in spittlebugs (Hemiptera: Cercopidae) resistance and tolerance at CIAT's interspecific Urochloa breeding programme |
| title_sort | realized genetic gain in spittlebugs hemiptera cercopidae resistance and tolerance at ciat s interspecific urochloa breeding programme |
| topic | genetic gain mejora genética breeding programmes feed grasses tolerance to pests tolerancia a las plagas gramínea forrajera plant damage daño vegetal antibiosis antibiosis |
| url | https://hdl.handle.net/10568/177056 |
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