Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda

dc.contributor.author Kiryowa, Moses
dc.contributor.author Ebinu, Aston
dc.contributor.author Kyaligonza, Vincent
dc.contributor.author Nkalubo, Stanley
dc.contributor.author Paparu, Pamela
dc.contributor.author Mukankusi, Claire
dc.contributor.author Tukamuhabwa, Phinehas
dc.date.accessioned 2019-10-28T08:43:59Z
dc.date.available 2019-10-28T08:43:59Z
dc.date.issued 2016-01
dc.description This is an open access article accessible from the publisher's site at https://www.escijournals.net/index.php/phytopath/article/view/1980/984 en_US
dc.description.abstract 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 the use in breeding programs aiming at breeding for broad spectrum resistance to bean anthracnose in Uganda. en_US
dc.description.sponsorship Uganda National Council of Science and Technology (UNCST) funded the study through the Millennium Science Initiative (MSI) project. Additional funding was provided by CIAT-Uganda and the ATAAS project under the National Agricultural Research Organization (NARO). en_US
dc.identifier.citation Kiryowa, M., Ebinu, A., Kyaligonza, V., Nkalubo, T.S., Paparu, P., Mukankusi, C. & Tukamuhabwa, P. (2016). Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda. International Journal of Phytopathology 5(3), 89-98. en_US
dc.identifier.issn 2305-106X (Online)
dc.identifier.uri http://hdl.handle.net/10570/7536
dc.language.iso en en_US
dc.publisher ESci Journals en_US
dc.subject Broad spectrum en_US
dc.subject Races en_US
dc.subject Virulence en_US
dc.subject Diversity en_US
dc.subject Pathotypes en_US
dc.title Pathogenic variation of colletotrichum lindemuthianum causing anthracnose of beans (phaseolus vulgaris) in Uganda en_US
dc.type Article en_US
Files