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Fungi isolated from groundnuts in some locations of West Java
Researcher : O.S. Dharmaputra, I. Retnowati
Published : 1996
Group :Microorganism
Full Report : Special request
Abstract :
One hundred and ninety eight groundnut samples were collected from freshly harvested groundnuts (FHG), farmer storage systems (FSS), middlemen warehouse (MW), wholesalers (WS) and retailer sample (RS) during the dry and wet seasons from Cidolog, Cianjur, Sukabumi and Bogor, West Java, Indonesia, in 1990/1991.
The moisture content (m.c.), intactness of kernels, and the percentages of groundnut kernels infected by each species of fungi were analyzed.
In general, the m.c. of the samples collected during the dry season was lower than of those collected during the wet season. Also, the m.c. of samples collected from FHG, FSS and MW was higher than of those collected from WS and RS.
The m.c. of samples collected from FHG was the highest (12.5-45.75%), but the percentages of damaged kernels were the lowest (2.5-13.8%), because the samples were shelled manually.
A total of 25 species of fungi were isolated from sapmles collected from the 4 localities. They were Acremonium strictum, Aspergillus candidus, A. flavus, A. niger, A. orchraceus, A. tamarii, A. wentii, Botryodiplodia theobromae, Cladosporium cladosporioides, C. sphaerospermum, Eurotium chevalieri, E. repens, E. rubrum, Fusarium equiseti, F. longipes, F. oxysporum, F. semitectum, Mucor sp., Papulaspora sp., Pestalotia sp., Penicillium aethiopicum, P. citrinum, Rhizopus sp., R. stolonifer and Syncephalastrum sp.
The predominant fungi in samples collected from Cidolog and Sukabumi during the dry season were Aspergillus wentii, while those collected from Cianjur and Bogor were A. wentii.
The percentages of kernels infected by A. wentii in samaples collected from Cidolog and Sukabumi were between 30-100% and 36-100%, respectively, while those of kernels infected by A. niger in samples collected from Cianjur and Bogor were between 34-93% and 14-98%, respectively.
The predominant fungi in samples collected from each location during the wet season were A. flavus. The percentage of kernels infected by the fungus in samples collected from Bogor was the highest (83-100%).