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Problems of seed-borne fungal diseases affecting sorghum grain (Sorghum bicolor L. Moench) in two districts of Oromia, Ethiopia

Research Paper | November 1, 2015

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Kedir Mohammed, Abdella Gure, M.I. Zuberi

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Int. J. Biosci.7( 5), 66-77, November 2015

DOI: http://dx.doi.org/10.12692/ijb/7.5.66-77

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Abstract

Mycological examination of 48 samples of sorghum grains obtained from farmers’ households in two districts (Dawa Chefa and Kemise) of Northeastern Ethiopia resulted in 1087 fungal isolates separated into 55 morphotaxa (3 of which unidentified) belonging to 13 genera. The genera include Aspergillus, Alternaria, Arthrinium, Bipolaris, Botrytis, Cercosporella, Cladosporium, Colletotrichum, Curvularia, Fusarium, Penicillium, Phoma and Trichoderma. Aspergillus, dominated (46% of all the mycoflora) followed by Penicillium (15.7%) and Bipolaris having the lowest occurrence (0.7%). About 45% of the samples of the sorghum seeds were found infected by more than one fungus, more isolates were obtained in samples collected from mid altitude zones whereas highly diversified fungi samples were observed in low agro-ecological zones with the highest Shannon diversity index obtained from Kemise district (H’= 1.99864) whereas highly diversified (H’=2.20718) morphotaxa were encountered at Qello.

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Problems of seed-borne fungal diseases affecting sorghum grain (Sorghum bicolor L. Moench) in two districts of Oromia, Ethiopia

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