QTLs associated with resistance to the cassava mosaic disease: new directions for a diverse planet
The cassava mosaic disease (CMD) is an economically important disease of the food crop cassava (Manihot esculenta Crantz) in Africa. Quantitative trait loci (QTLs) associated with resistance to CMD were identified using 132 F1 progeny derived from a cross between the CMD resistant accession TMSI3057...
| Autores principales: | , , |
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| Formato: | Conference Paper |
| Lenguaje: | Inglés |
| Publicado: |
2004
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/103350 |
| _version_ | 1855520575284314112 |
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| author | Lokko, Y. Gedil, Melaku A Dixon, A. |
| author_browse | Dixon, A. Gedil, Melaku A Lokko, Y. |
| author_facet | Lokko, Y. Gedil, Melaku A Dixon, A. |
| author_sort | Lokko, Y. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The cassava mosaic disease (CMD) is an economically important disease of the food crop cassava (Manihot esculenta Crantz) in Africa. Quantitative trait loci (QTLs) associated with resistance to CMD were identified using 132 F1 progeny derived from a cross between the CMD resistant accession TMSI30572 and the susceptible landrace TME117. The population was evaluated in the field for two growing seasons in Nigeria. Mean disease severity scores (MDSS) were used for QTL analysis. Five highly significant (p<0.001) marker-associated QTL effects, explaining between 10.47 and 12.15% of the total phenotypic variation, were detected by regression in the old source of resistance. The Kruskal Wallis analysis further detected four highly significant marker-associated QTL effects. Significant marker trait associations were due to markers donated by both parents, which confirms the polygenic and recessive nature of this source of resistance. |
| format | Conference Paper |
| id | CGSpace103350 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2004 |
| publishDateRange | 2004 |
| publishDateSort | 2004 |
| record_format | dspace |
| spelling | CGSpace1033502024-01-17T12:58:34Z QTLs associated with resistance to the cassava mosaic disease: new directions for a diverse planet Lokko, Y. Gedil, Melaku A Dixon, A. linkage mapping simple sequence repeats cassava mosaic virus quantitative trait loci manihot esculenta The cassava mosaic disease (CMD) is an economically important disease of the food crop cassava (Manihot esculenta Crantz) in Africa. Quantitative trait loci (QTLs) associated with resistance to CMD were identified using 132 F1 progeny derived from a cross between the CMD resistant accession TMSI30572 and the susceptible landrace TME117. The population was evaluated in the field for two growing seasons in Nigeria. Mean disease severity scores (MDSS) were used for QTL analysis. Five highly significant (p<0.001) marker-associated QTL effects, explaining between 10.47 and 12.15% of the total phenotypic variation, were detected by regression in the old source of resistance. The Kruskal Wallis analysis further detected four highly significant marker-associated QTL effects. Significant marker trait associations were due to markers donated by both parents, which confirms the polygenic and recessive nature of this source of resistance. 2004 2019-08-21T14:13:00Z 2019-08-21T14:13:00Z Conference Paper https://hdl.handle.net/10568/103350 en Limited Access Lokko, Y., Gedil, M. & Dixon, A. (2004, September). QTLs associated with resistance to the cassava mosaic disease. In Proceedings of the 4th International Crop Science Congress (Brisbane, QLD). Kolkata: Regional Institute, (p.1- 2). |
| spellingShingle | linkage mapping simple sequence repeats cassava mosaic virus quantitative trait loci manihot esculenta Lokko, Y. Gedil, Melaku A Dixon, A. QTLs associated with resistance to the cassava mosaic disease: new directions for a diverse planet |
| title | QTLs associated with resistance to the cassava mosaic disease: new directions for a diverse planet |
| title_full | QTLs associated with resistance to the cassava mosaic disease: new directions for a diverse planet |
| title_fullStr | QTLs associated with resistance to the cassava mosaic disease: new directions for a diverse planet |
| title_full_unstemmed | QTLs associated with resistance to the cassava mosaic disease: new directions for a diverse planet |
| title_short | QTLs associated with resistance to the cassava mosaic disease: new directions for a diverse planet |
| title_sort | qtls associated with resistance to the cassava mosaic disease new directions for a diverse planet |
| topic | linkage mapping simple sequence repeats cassava mosaic virus quantitative trait loci manihot esculenta |
| url | https://hdl.handle.net/10568/103350 |
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