Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria
Studies were made to identify sources of resistance to yam viruses in Dioscorea alata. Forty genotypes of D. alata were evaluated in both the field and in the screenhouse for reactions to the yam viruses: Yam mosaic virus (YMV), genus Potyvirus; Dioscorea alata virus (DAV), genus Potyvirus; Cucumber...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2006
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| Online Access: | https://hdl.handle.net/10568/91349 |
| _version_ | 1855539328040566784 |
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| author | Odu, B.O. Asiedu, Robert Shoyinka, S.A. Hughes, J.A. |
| author_browse | Asiedu, Robert Hughes, J.A. Odu, B.O. Shoyinka, S.A. |
| author_facet | Odu, B.O. Asiedu, Robert Shoyinka, S.A. Hughes, J.A. |
| author_sort | Odu, B.O. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Studies were made to identify sources of resistance to yam viruses in Dioscorea alata. Forty genotypes of D. alata were evaluated in both the field and in the screenhouse for reactions to the yam viruses: Yam mosaic virus (YMV), genus Potyvirus; Dioscorea alata virus (DAV), genus Potyvirus; Cucumber mosaic virus (CMV), genus Cucumovirus; and Dioscorea alata bacilliform virus (DaBV), genus Badnavirus. The D. alata genotypes were planted in the field and subsequently scored for virus symptom severity. All the genotypes were also planted in an insect-proofed screenhouse, and challenged mechanically and by vectors for susceptibility to each of the viruses. Analysis of variance (anova) of the symptom severity scores showed that the genotypes responded differently (P < 0.01) to virus disease in the field. Field evaluation also showed that TDa 291 (a landrace genotype from Puerto Rico), TDa 87/01091, TDa 96-4, TDa 95-163 and TDa 289 from Nigeria, and TDa 95-25 (a landrace genotype from Ghana), had a low virus disease symptom rating. Overall screening results showed that two D. alata genotypes (TDa 289 and TDa 291) are good sources of resistance to YMV, DAV and CMV, and that they are tolerant to DaBV. |
| format | Journal Article |
| id | CGSpace91349 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace913492024-05-15T05:12:11Z Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria Odu, B.O. Asiedu, Robert Shoyinka, S.A. Hughes, J.A. dioscorea alata genotypes yam mosaic virus genus potyvirus cucumber mosaic virus screenhouse resistance Studies were made to identify sources of resistance to yam viruses in Dioscorea alata. Forty genotypes of D. alata were evaluated in both the field and in the screenhouse for reactions to the yam viruses: Yam mosaic virus (YMV), genus Potyvirus; Dioscorea alata virus (DAV), genus Potyvirus; Cucumber mosaic virus (CMV), genus Cucumovirus; and Dioscorea alata bacilliform virus (DaBV), genus Badnavirus. The D. alata genotypes were planted in the field and subsequently scored for virus symptom severity. All the genotypes were also planted in an insect-proofed screenhouse, and challenged mechanically and by vectors for susceptibility to each of the viruses. Analysis of variance (anova) of the symptom severity scores showed that the genotypes responded differently (P < 0.01) to virus disease in the field. Field evaluation also showed that TDa 291 (a landrace genotype from Puerto Rico), TDa 87/01091, TDa 96-4, TDa 95-163 and TDa 289 from Nigeria, and TDa 95-25 (a landrace genotype from Ghana), had a low virus disease symptom rating. Overall screening results showed that two D. alata genotypes (TDa 289 and TDa 291) are good sources of resistance to YMV, DAV and CMV, and that they are tolerant to DaBV. 2006-12 2018-03-07T11:25:40Z 2018-03-07T11:25:40Z Journal Article https://hdl.handle.net/10568/91349 en Limited Access Wiley Odu, B.O., Asiedu, R., Shoyinka, S.A. & Hughes, J.A. (2006). Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria. Journal of Phytopathology, 154(11‐12), 716-724. |
| spellingShingle | dioscorea alata genotypes yam mosaic virus genus potyvirus cucumber mosaic virus screenhouse resistance Odu, B.O. Asiedu, Robert Shoyinka, S.A. Hughes, J.A. Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria |
| title | Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria |
| title_full | Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria |
| title_fullStr | Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria |
| title_full_unstemmed | Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria |
| title_short | Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria |
| title_sort | screening of water yam dioscorea alata l genotypes for reactions to viruses in nigeria |
| topic | dioscorea alata genotypes yam mosaic virus genus potyvirus cucumber mosaic virus screenhouse resistance |
| url | https://hdl.handle.net/10568/91349 |
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