A “Gullying” fruit disease of Dacryodes Edulis (G. Don ) H. J. LAM in Benin City, Nigeria

Ikhatua Matilda Iyayi, Okeke Emeka Anthony

Abstract


A survey of fruit diseases of the African pear (Dacryodes edulis ) was conducted in New Benin, Oba and Uselu markets located in Benin City during the harvest season. The incidence of the most prominent disease was determined and data obtained subjected to statistical analysis using the Randomized Complete Block Design (RCBD). Apriori comparison was further conducted using Least Significant Difference (LSD) to test for significance within the means for location (markets) and sampling time in weeks. Pathological studies i.e. isolation, identification, and pathogenicity tests were also undertaken. The most prominent disease was the “gullying” disease which consisted of a dry rot that ate deep into the mesocarp. The overall incidence of disease in New Benin, Oba and Uselu markets were 71.7, 57.1 and 64.5 % respectively. There were significant differences in disease incidence among some of the markets while sampling time did not significantly affect incidence. Two fungal isolates were characteristically associated with the disease i.e. a white one identified as Brachysporium sp. and a dark unidentified one. Pathogenicity tests confirmed Brachysporium sp. as the pathogen of the disease.

 

Keywords: “Gullying”, fruit, disease, Brachysporium, Dacryodes.


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