Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria
Large-scale screening of cassava, Manihot esculenta Crantz, genotypes for resistance to infestation by whitefly Bemisia tabaci Gennadius, the vector of cassava mosaic geminiviruses, is limited. A range of new cassava elite clones were therefore assessed for the whitefly infestation in the 1999/2000...
| Autores principales: | , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Oxford University Press
2005
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/91898 |
| _version_ | 1855540744248360960 |
|---|---|
| author | Ariyo, O. Dixon, A. Atiri, G. |
| author_browse | Ariyo, O. Atiri, G. Dixon, A. |
| author_facet | Ariyo, O. Dixon, A. Atiri, G. |
| author_sort | Ariyo, O. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Large-scale screening of cassava, Manihot esculenta Crantz, genotypes for resistance to infestation by whitefly Bemisia tabaci Gennadius, the vector of cassava mosaic geminiviruses, is limited. A range of new cassava elite clones were therefore assessed for the whitefly infestation in the 1999/2000 and 2000/2001 cropping seasons in experimental fields of International Institute of Tropical Agriculture, Ibadan, Nigeria. On each scoring day, between 0600 and 0800 hours when the whiteflies were relatively immobile, adult whitefly populations on the five topmost expanded leaves of cassava cultivars were counted. All through the 6-mo scoring period, there was a highly significant difference in whitefly infestation among the new cassava elite clones. Vector population buildup was observed in Ibadan (forest–savanna transition zone) and Onne (humid forest), 2 mo after planting (MAP). Mean infestation across cassava genotypes was significantly highest (16.6 whiteflies per plant) in Ibadan and lowest in Zaria (0.2). Generally, whitefly infestation was very low in all locations at 5 and 6 MAP. During this period, cassava genotypes 96/1439 and 91/02324 significantly supported higher infestations than other genotypes. Plants of 96/1089A and TMS 30572 supported the lowest whitefly infestation across cassava genotypes in all locations. The preferential whitefly visitation, the differences between locations in relation to whitefly population, cassava mosaic disease, and the fresh root yield of cassava genotypes are discussed. |
| format | Journal Article |
| id | CGSpace91898 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2005 |
| publishDateRange | 2005 |
| publishDateSort | 2005 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | CGSpace918982024-05-15T05:12:14Z Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria Ariyo, O. Dixon, A. Atiri, G. whitefly infestation cassava genotypes cassava mosaic geminiviruses resistance cassava elite clones african cassava mosaic virus Large-scale screening of cassava, Manihot esculenta Crantz, genotypes for resistance to infestation by whitefly Bemisia tabaci Gennadius, the vector of cassava mosaic geminiviruses, is limited. A range of new cassava elite clones were therefore assessed for the whitefly infestation in the 1999/2000 and 2000/2001 cropping seasons in experimental fields of International Institute of Tropical Agriculture, Ibadan, Nigeria. On each scoring day, between 0600 and 0800 hours when the whiteflies were relatively immobile, adult whitefly populations on the five topmost expanded leaves of cassava cultivars were counted. All through the 6-mo scoring period, there was a highly significant difference in whitefly infestation among the new cassava elite clones. Vector population buildup was observed in Ibadan (forest–savanna transition zone) and Onne (humid forest), 2 mo after planting (MAP). Mean infestation across cassava genotypes was significantly highest (16.6 whiteflies per plant) in Ibadan and lowest in Zaria (0.2). Generally, whitefly infestation was very low in all locations at 5 and 6 MAP. During this period, cassava genotypes 96/1439 and 91/02324 significantly supported higher infestations than other genotypes. Plants of 96/1089A and TMS 30572 supported the lowest whitefly infestation across cassava genotypes in all locations. The preferential whitefly visitation, the differences between locations in relation to whitefly population, cassava mosaic disease, and the fresh root yield of cassava genotypes are discussed. 2005-04-01 2018-03-23T06:48:58Z 2018-03-23T06:48:58Z Journal Article https://hdl.handle.net/10568/91898 en Limited Access Oxford University Press Ariyo, O., Dixon, A. & Atiri, G. (2005). Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria. Journal of Economic Entomology, 98(2), 611-617. |
| spellingShingle | whitefly infestation cassava genotypes cassava mosaic geminiviruses resistance cassava elite clones african cassava mosaic virus Ariyo, O. Dixon, A. Atiri, G. Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria |
| title | Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria |
| title_full | Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria |
| title_fullStr | Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria |
| title_full_unstemmed | Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria |
| title_short | Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria |
| title_sort | whitefly bemisia tabaci homoptera aleyrodidae infestation on cassava genotypes grown at different ecozones in nigeria |
| topic | whitefly infestation cassava genotypes cassava mosaic geminiviruses resistance cassava elite clones african cassava mosaic virus |
| url | https://hdl.handle.net/10568/91898 |
| work_keys_str_mv | AT ariyoo whiteflybemisiatabacihomopteraaleyrodidaeinfestationoncassavagenotypesgrownatdifferentecozonesinnigeria AT dixona whiteflybemisiatabacihomopteraaleyrodidaeinfestationoncassavagenotypesgrownatdifferentecozonesinnigeria AT atirig whiteflybemisiatabacihomopteraaleyrodidaeinfestationoncassavagenotypesgrownatdifferentecozonesinnigeria |