Identification of common bean genotypes with dual leaf and pod resistance to common bacterial blight disease in Uganda
Common Bacterial Blight (CBB), caused by Xanthomonas axonopodis pv. phaseoli (Xap) and Xanthomonas axonopodis pv. phaseoli var. fuscans (Xapf), is a serious disease that affects common bean production worldwide. In Uganda, it is the most severe and widely occurring bacterial disease, causing signifi...
| Autores principales: | , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
African Journals Online
2018
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/93223 |
| _version_ | 1855517326252703744 |
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| author | Alladassi, Boris M.E. Nkalubo, Stanley T. Mukankusi, Clare Mugisha Kayaga, H.N. Gibson, P. Edema, Richard Urrea, Carlos A. Kelly, James D. Rubaihayo, P.R. |
| author_browse | Alladassi, Boris M.E. Edema, Richard Gibson, P. Kayaga, H.N. Kelly, James D. Mukankusi, Clare Mugisha Nkalubo, Stanley T. Rubaihayo, P.R. Urrea, Carlos A. |
| author_facet | Alladassi, Boris M.E. Nkalubo, Stanley T. Mukankusi, Clare Mugisha Kayaga, H.N. Gibson, P. Edema, Richard Urrea, Carlos A. Kelly, James D. Rubaihayo, P.R. |
| author_sort | Alladassi, Boris M.E. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Common Bacterial Blight (CBB), caused by Xanthomonas axonopodis pv. phaseoli (Xap) and Xanthomonas axonopodis pv. phaseoli var. fuscans (Xapf), is a serious disease that affects common bean production worldwide. In Uganda, it is the most severe and widely occurring bacterial disease, causing significant yield losses in common bean. Although various sources of resistance have been developed around the world, none of the varieties grown in Uganda is known to be resistant. The objective of this study was to identify lines with combined leaf and pod resistance for introgression into locally adapted but susceptible Ugandan genotypes. A total of 132 common bean accessions was evaluated in a screenhouse and under field conditions, in an 11x12 alpha lattice design. Genotypes were inoculated with a local isolate in a screenhouse; while the plants were left to undergo natural infestation in field. Results indicated significant differences (P<0.001) in genotypic reactions against the CBB disease, with a range of disease scores of 2.2 - 7.8 on leaves and 2.6 - 7.1 on pods (1-9 CIAT disease scale), suggesting high genetic variability among the tested germplasm. Relatively low correlation (r = 0.39) was observed between leaf and pod reactions, suggesting differential expression of CBB resistance in these two plant organs. Overall, four genotypes, NE2-14-8, NE17-14-29, NE14-09-78 and VAX3, consistently showed resistance in both screenhouse and field evaluations, leaf and pod inoculations and at all sampling stages. These genotypes were, therefore, identified for transferring CBB resistance into Ugandan susceptible market class bean varieties. |
| format | Journal Article |
| id | CGSpace93223 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | African Journals Online |
| publisherStr | African Journals Online |
| record_format | dspace |
| spelling | CGSpace932232025-03-13T09:44:01Z Identification of common bean genotypes with dual leaf and pod resistance to common bacterial blight disease in Uganda Alladassi, Boris M.E. Nkalubo, Stanley T. Mukankusi, Clare Mugisha Kayaga, H.N. Gibson, P. Edema, Richard Urrea, Carlos A. Kelly, James D. Rubaihayo, P.R. phaseolus vulgaris plant diseases enfermedades de las plantas xanthomonas axonopodis common beans genotypes Common Bacterial Blight (CBB), caused by Xanthomonas axonopodis pv. phaseoli (Xap) and Xanthomonas axonopodis pv. phaseoli var. fuscans (Xapf), is a serious disease that affects common bean production worldwide. In Uganda, it is the most severe and widely occurring bacterial disease, causing significant yield losses in common bean. Although various sources of resistance have been developed around the world, none of the varieties grown in Uganda is known to be resistant. The objective of this study was to identify lines with combined leaf and pod resistance for introgression into locally adapted but susceptible Ugandan genotypes. A total of 132 common bean accessions was evaluated in a screenhouse and under field conditions, in an 11x12 alpha lattice design. Genotypes were inoculated with a local isolate in a screenhouse; while the plants were left to undergo natural infestation in field. Results indicated significant differences (P<0.001) in genotypic reactions against the CBB disease, with a range of disease scores of 2.2 - 7.8 on leaves and 2.6 - 7.1 on pods (1-9 CIAT disease scale), suggesting high genetic variability among the tested germplasm. Relatively low correlation (r = 0.39) was observed between leaf and pod reactions, suggesting differential expression of CBB resistance in these two plant organs. Overall, four genotypes, NE2-14-8, NE17-14-29, NE14-09-78 and VAX3, consistently showed resistance in both screenhouse and field evaluations, leaf and pod inoculations and at all sampling stages. These genotypes were, therefore, identified for transferring CBB resistance into Ugandan susceptible market class bean varieties. 2018 2018-06-13T14:56:57Z 2018-06-13T14:56:57Z Journal Article https://hdl.handle.net/10568/93223 en Open Access African Journals Online Alladassi, B.M.E., Nkalubo, S.T., Mukankusi, Clare, Kayaga, H.N., Gibson, P., Edema, R., Urrea, C.A., Kelly, J.D., Rubaihayo, P.R. (2018). Identification of common bean genotypes with dual leaf and pod resistance to common bacterial blight disease in Uganda. African Crop Science Journal, 26(1), 63–77. |
| spellingShingle | phaseolus vulgaris plant diseases enfermedades de las plantas xanthomonas axonopodis common beans genotypes Alladassi, Boris M.E. Nkalubo, Stanley T. Mukankusi, Clare Mugisha Kayaga, H.N. Gibson, P. Edema, Richard Urrea, Carlos A. Kelly, James D. Rubaihayo, P.R. Identification of common bean genotypes with dual leaf and pod resistance to common bacterial blight disease in Uganda |
| title | Identification of common bean genotypes with dual leaf and pod resistance to common bacterial blight disease in Uganda |
| title_full | Identification of common bean genotypes with dual leaf and pod resistance to common bacterial blight disease in Uganda |
| title_fullStr | Identification of common bean genotypes with dual leaf and pod resistance to common bacterial blight disease in Uganda |
| title_full_unstemmed | Identification of common bean genotypes with dual leaf and pod resistance to common bacterial blight disease in Uganda |
| title_short | Identification of common bean genotypes with dual leaf and pod resistance to common bacterial blight disease in Uganda |
| title_sort | identification of common bean genotypes with dual leaf and pod resistance to common bacterial blight disease in uganda |
| topic | phaseolus vulgaris plant diseases enfermedades de las plantas xanthomonas axonopodis common beans genotypes |
| url | https://hdl.handle.net/10568/93223 |
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