DETECTION AND IDENTIFICATION OF SEED BORNE FUNGI ON FARMER SAVED SEEDS OF ONIONS (Allium cepa) IN KEBBI STATE, NORTHWEST NIGERIA

Dauda W. P., Alao S. E. L., Zarafi A. B., Alabi O.

Abstract


Most farmers in Nigeria plant uncertified seed saved from the previous harvest, borrowed from neighbors or purchased from local markets. These factors encourage introduction and spread of Seedborne diseases. Seed health testing to detect seed borne pathogens is an important step in the management of crop diseases. This study was conducted to assess the incidence of seed-borne fungi on farmer-saved seeds of onions obtained during a survey of six Local Government Areas in Kebbi State, Nigeria. Four hundred seeds each of six samples were examined using the blotter and agar plate methods. Sixteen repetitions of each treatment were arranged using the completely randomized design (CRD). Data obtained were subjected to analysis of variance (ANOVA) using the SAS Institute (2002) and means were separated using Student Newman Keul’s test (SNK) at 5% level of significance. Most frequently encountered genera of fungi were Fusarium, Rhizopus, Mucor, Botrytis, Aspergillus and Penicillium. The seven fungi pathogenic on onion had identity confirmed at the International Institute for Mycology, Edgham, London, U.K. Farmers-saved seeds obtained from Kebbi State had varying degree of fungal infections caused by Fusarium spp., Aspergillus sp. and Mucor irregularis. The result recommends need of onion farmer’s seeds dress their onion seeds before sowing.


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MAYFEB Journal of Agricultural Science
Toronto, Ontario, Canada
MAYFEB TECHNOLOGY DEVELOPMENT
ISSN 2371-512X