Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

ISOLATION AND IDENTIFICATION OF STORAGE FUNGI FROM ONION (Pages : 41 - 46)

A survey was conducted on diseases of five onion varieties which included four local varieties namely Taherpuri, Faridpuri, Kalashnagari and Zitka, and one Indian variety namely Pusa red in four different markets in Mymensingh during 2007. These varieties were used as test samples to isolate and identify the associated fungi in storage condition. Five different fungal species belonging to three genera were isolated and their population increased proportionately with the duration of storage period. The fungi isolated were Aspergillus niger, Aspergillus flavus, Penicillium spp., Fusarium oxysporum and Fusarium moniliforme. Healthy onion bulbs were inoculated (with injury and without injury) by these fungi. Individual fungi produced distinct symptom of disease in inoculation chamber at 22-23°C temperature. Comparatively lower amount of disease was found at15 days of inoculation. Maximum diseases were found in the variety Pusa Red (with injury). Disease development increased with increasing storage duration and the lowest was found in variety Zitka (without injury).Download