Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae)
The flower bud thrips, Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae), is an economically important pest of cowpea in sub‐Saharan Africa. Varietal resistance is the most preferred, environmentally friendly, cost‐effective and sustainable option for controlling this pest. The objective of...
| Autores principales: | , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2019
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/101302 |
| _version_ | 1855536724804894720 |
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| author | Togola, A. Boukar, O. Chamarthi, S. Belko, N. Tamò, Manuele Oigiangbe, N. Ojo, J. Ibikunle, M. Fatokun, C. |
| author_browse | Belko, N. Boukar, O. Chamarthi, S. Fatokun, C. Ibikunle, M. Oigiangbe, N. Ojo, J. Tamò, Manuele Togola, A. |
| author_facet | Togola, A. Boukar, O. Chamarthi, S. Belko, N. Tamò, Manuele Oigiangbe, N. Ojo, J. Ibikunle, M. Fatokun, C. |
| author_sort | Togola, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The flower bud thrips, Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae), is an economically important pest of cowpea in sub‐Saharan Africa. Varietal resistance is the most preferred, environmentally friendly, cost‐effective and sustainable option for controlling this pest. The objective of this study was to identify sources of resistance to M. sjostedti among mini core accessions from the largest world cowpea germplasm collection maintained at the International Institute of Tropical Agriculture (IITA). The study was conducted during the 2015 and 2016 cropping seasons where 365 accessions were screened under field conditions. Each accession was rated visually for thrips damage score, flower abortion rate, number of pods per plant and number of thrips per flower. The resistance levels observed in genotypes TVu8631, TVu16368, TVu8671 and TVu7325 were similar to that of the resistant check “Sanzisabinli” (called Sanzi) during both seasons. In addition, 56 mini core genotypes showed moderate resistance to thrips damage. High heritability values were associated with thrips damage scores at 65 days after planting (0.60), percentage of effective peduncles (0.59), flower bud abortion rate (0.59), number of pods per plant (0.51) and number of peduncles with pods (0.5). The accessions identified with good levels of resistance to flower bud thrips will be used in cowpea breeding programs to develop improved resistant varieties. |
| format | Journal Article |
| id | CGSpace101302 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1013022025-11-11T10:43:14Z Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae) Togola, A. Boukar, O. Chamarthi, S. Belko, N. Tamò, Manuele Oigiangbe, N. Ojo, J. Ibikunle, M. Fatokun, C. genotypes crop improvement screening heritability varietal resistance yield losses fields cowpeas The flower bud thrips, Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae), is an economically important pest of cowpea in sub‐Saharan Africa. Varietal resistance is the most preferred, environmentally friendly, cost‐effective and sustainable option for controlling this pest. The objective of this study was to identify sources of resistance to M. sjostedti among mini core accessions from the largest world cowpea germplasm collection maintained at the International Institute of Tropical Agriculture (IITA). The study was conducted during the 2015 and 2016 cropping seasons where 365 accessions were screened under field conditions. Each accession was rated visually for thrips damage score, flower abortion rate, number of pods per plant and number of thrips per flower. The resistance levels observed in genotypes TVu8631, TVu16368, TVu8671 and TVu7325 were similar to that of the resistant check “Sanzisabinli” (called Sanzi) during both seasons. In addition, 56 mini core genotypes showed moderate resistance to thrips damage. High heritability values were associated with thrips damage scores at 65 days after planting (0.60), percentage of effective peduncles (0.59), flower bud abortion rate (0.59), number of pods per plant (0.51) and number of peduncles with pods (0.5). The accessions identified with good levels of resistance to flower bud thrips will be used in cowpea breeding programs to develop improved resistant varieties. 2019-07 2019-05-20T11:13:57Z 2019-05-20T11:13:57Z Journal Article https://hdl.handle.net/10568/101302 en Open Access application/pdf Wiley Togola, A., Boukar, O., Chamarthi, S., Belko, N., Tamò, M., Oigiangbe, N., ... & Fatokun, C. (2019). Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae). Journal of Applied Entomology, 1-10. |
| spellingShingle | genotypes crop improvement screening heritability varietal resistance yield losses fields cowpeas Togola, A. Boukar, O. Chamarthi, S. Belko, N. Tamò, Manuele Oigiangbe, N. Ojo, J. Ibikunle, M. Fatokun, C. Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae) |
| title | Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae) |
| title_full | Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae) |
| title_fullStr | Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae) |
| title_full_unstemmed | Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae) |
| title_short | Evaluation of cowpea mini core accessions for resistance to flower bud thrips Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae) |
| title_sort | evaluation of cowpea mini core accessions for resistance to flower bud thrips megalurothrips sjostedti trybom thysanoptera thripidae |
| topic | genotypes crop improvement screening heritability varietal resistance yield losses fields cowpeas |
| url | https://hdl.handle.net/10568/101302 |
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