Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda
Colletotrichum lindemuthianum is a highly variable pathogen of common beans that easily overcomes resistance in cultivars bred with single-gene resistance. To determine pathogenic variability of the pathogen in Uganda, samples of common bean tissues with anthracnose symptoms were collected in eight...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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eSci Journals Publishing
2016
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| Acceso en línea: | https://hdl.handle.net/10568/82599 |
| _version_ | 1855513755616542720 |
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| author | Kiryowa, Moses J. Ebinu, Aston Kyaligonza, Vincent Nkalubo, Stanley T. Paparu, Pamela Mukankusi, Clare Mugisha Tukamuhabwe, Phineas |
| author_browse | Ebinu, Aston Kiryowa, Moses J. Kyaligonza, Vincent Mukankusi, Clare Mugisha Nkalubo, Stanley T. Paparu, Pamela Tukamuhabwe, Phineas |
| author_facet | Kiryowa, Moses J. Ebinu, Aston Kyaligonza, Vincent Nkalubo, Stanley T. Paparu, Pamela Mukankusi, Clare Mugisha Tukamuhabwe, Phineas |
| author_sort | Kiryowa, Moses J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Colletotrichum lindemuthianum is a highly variable pathogen of common beans that easily overcomes resistance in cultivars bred with single-gene resistance. To determine pathogenic variability of the pathogen in Uganda, samples of common bean tissues with anthracnose symptoms were collected in eight districts of Uganda, namely Kabarole, Sironko, Mbale, Oyam, Lira, Kapchorwa, Maracha and Kisoro. 51 isolates sporulated successfully on Potato Dextrose Agar and Mathur’s media and were used to inoculate 12 differential cultivars under controlled conditions. Five plants per cultivar were inoculated with each isolate and then evaluated for their reaction using the 1 – 9 severity scale. Races were classified using the binary nomenclature system proposed by Pastor Corrales (1991). Variation due to cultivar and isolate effects was significant (P≤0.001) for severity. The 51 isolates from eight districts grouped into 27 different races. Sironko district had the highest number of races followed by Mbale and Kabarole. Races 2047 and 4095 were the most frequently found, each with 10 isolates grouped under them. Race 4095 was the most virulent since it caused a susceptible (S) reaction on all 12 differential cultivars and the susceptible check. This was followed by races 2479, 2047 and 2045 respectively. Two races, 4094 and 2479, caused a susceptible reaction on the differential cultivar G2333, which nevertheless, showed the most broad spectrum resistance followed by cultivars Cornell 49-242, TU, and AB136 respectively. These cultivars are recommended for use in breeding programs aiming at breeding for broad spectrum resistance to bean anthracnose in Uganda. |
| format | Journal Article |
| id | CGSpace82599 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | eSci Journals Publishing |
| publisherStr | eSci Journals Publishing |
| record_format | dspace |
| spelling | CGSpace825992025-03-13T09:43:57Z Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda Kiryowa, Moses J. Ebinu, Aston Kyaligonza, Vincent Nkalubo, Stanley T. Paparu, Pamela Mukankusi, Clare Mugisha Tukamuhabwe, Phineas virulence diversity pathotypes colletotrichum lindemuthianum phaseolus vulgaris pests Colletotrichum lindemuthianum is a highly variable pathogen of common beans that easily overcomes resistance in cultivars bred with single-gene resistance. To determine pathogenic variability of the pathogen in Uganda, samples of common bean tissues with anthracnose symptoms were collected in eight districts of Uganda, namely Kabarole, Sironko, Mbale, Oyam, Lira, Kapchorwa, Maracha and Kisoro. 51 isolates sporulated successfully on Potato Dextrose Agar and Mathur’s media and were used to inoculate 12 differential cultivars under controlled conditions. Five plants per cultivar were inoculated with each isolate and then evaluated for their reaction using the 1 – 9 severity scale. Races were classified using the binary nomenclature system proposed by Pastor Corrales (1991). Variation due to cultivar and isolate effects was significant (P≤0.001) for severity. The 51 isolates from eight districts grouped into 27 different races. Sironko district had the highest number of races followed by Mbale and Kabarole. Races 2047 and 4095 were the most frequently found, each with 10 isolates grouped under them. Race 4095 was the most virulent since it caused a susceptible (S) reaction on all 12 differential cultivars and the susceptible check. This was followed by races 2479, 2047 and 2045 respectively. Two races, 4094 and 2479, caused a susceptible reaction on the differential cultivar G2333, which nevertheless, showed the most broad spectrum resistance followed by cultivars Cornell 49-242, TU, and AB136 respectively. These cultivars are recommended for use in breeding programs aiming at breeding for broad spectrum resistance to bean anthracnose in Uganda. 2016 2017-06-27T19:43:58Z 2017-06-27T19:43:58Z Journal Article https://hdl.handle.net/10568/82599 en Open Access eSci Journals Publishing Kiryowa, Moses J.; Ebinu, Aston; Kyaligonza, Vincent; Nkalubo, Stanley T.; Paparu, Pamela; Mukankusi, Clare; Tukamuhabwa, Phinehas. 2016. Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda . ESci Journal of Plant Pathology . eSci Journals Publishing, 5(3): 89-98. |
| spellingShingle | virulence diversity pathotypes colletotrichum lindemuthianum phaseolus vulgaris pests Kiryowa, Moses J. Ebinu, Aston Kyaligonza, Vincent Nkalubo, Stanley T. Paparu, Pamela Mukankusi, Clare Mugisha Tukamuhabwe, Phineas Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda |
| title | Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda |
| title_full | Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda |
| title_fullStr | Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda |
| title_full_unstemmed | Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda |
| title_short | Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda |
| title_sort | pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans phaseolus vulgaris in uganda |
| topic | virulence diversity pathotypes colletotrichum lindemuthianum phaseolus vulgaris pests |
| url | https://hdl.handle.net/10568/82599 |
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