Portal de Periódicos da CAPES

Seasonal fluctuations of Egyptian soil fungi

1970; Cambridge University Press; Volume: 54; Issue: 1 Linguagem: Inglês

10.1016/s0007-1536(70)80122-x

0007-1536

A. H. Moubasher, S.M. El-Dohlob,

Mycorrhizal Fungi and Plant Interactions

The seasonal fluctuations of fungi were studied over 19 months. The richest periods in the fungal population and spectrum were between Nov. 1966 and Apr. 1967 and between Sept. and Oct. 1967 and the poorest period occurred during the summer months. Sixteen genera, in addition to Mucoraceae, were isolated, of which Aspergillus, Penicillium and Fusarium were represented all through the year. Aspergillus predominated in 16 months and was surpassed by Fusarium in 3 months only. Aspergillus showed its highest frequency of occurrence during the periods May–August 1966, Mar.–May 1967 and Aug.–Oct. 1967 (average temperature of these periods 26·7°C). The highest frequency of Penicillium was recorded during Sept.–Nov. 1966 and Nov.–Dec. 1967 (average temperature 21·5°C). Fusarium prevailed during the summer months. Thirteen species of Penicillium were isolated, of which P. corylophilum and P.jensenii were dominant. Twelve species of Aspergillus were recorded, of which A. terreus, A. niger and A. flavus were the most common: the two former were isolated all through the year.