Research Article
Reaction of Southern Coffee Germplasms to Coffee Berry Disease (Colletotrichum kahawae Waller and Bridge), in Southern Ethiopia
Ano Wariyo*
,
Mashilla Dejene,
Eshetu Derso
Issue:
Volume 9, Issue 2, December 2025
Pages:
58-69
Received:
17 January 2025
Accepted:
16 June 2025
Published:
7 July 2025
DOI:
10.11648/j.be.20250902.11
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Abstract: Coffee berry disease (CBD) still remains a limiting factor in the production of Arabica coffee in Ethiopia. This current study was carried out to evaluate Coffea arabica accessions from southern Ethiopia for their reaction to the disease under field and laboratory conditions. The evaluation of seventy six C. arabica accessions and four CBD resistant varieties as checks was conducted in 2021 on coffee plants already established in 2015. Disease average infection, percent severity index (PSI) and area under disease progress curve (AUDPC) were calculated. C. arabica accessions significantly differed in their resistance to CBD both at field and laboratory conditions. From seventy six accessions, fourteen were selected in visual assessment for attached berry test, detached berry and seedling hypocotyls tests. In attached berry test in the field, eight accessions showed low level (<30%) of CBD infection (relatively resistant to CBD), whereas six accessions were susceptible and showed higher levels of CBD infection. Five accessions were found to be resistant, whereas nine were susceptible under laboratory conditions. The present study demonstrated the role of host resistance in combating CBD in the study areas. The future research work should focus on evaluating the promising coffee accessions in multi-locations and multi-years field trials as well as further studies on the resistance mechanisms of these accessions to the CBD causal pathogen.
Abstract: Coffee berry disease (CBD) still remains a limiting factor in the production of Arabica coffee in Ethiopia. This current study was carried out to evaluate Coffea arabica accessions from southern Ethiopia for their reaction to the disease under field and laboratory conditions. The evaluation of seventy six C. arabica accessions and four CBD resistan...
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