SOME MYCOLOGICAL, PHYTOPATHOLOGICAL AND PHYSIOLOGICAL STUDIES ON MYCOBIOTA OF SELECTED NEWLY RECLAIMED SOILS IN ASSIUT GOVERNORATEJ EGYPT

Abstract

From the mycological study, the main results could be summarized as follows: 1- There are basic similarities between fungi associated with the

different localities.

2- There are no specific fungal flora characteristic of each locality and were no considerable differences between the mycobiota recovered from one locality to another. However, the lists may differ in the numbers and frequency of occurrence. 3- The highest numbers of fungal genera and species were recorded in PR followed by WA and PF while, the lowest numbers were recorded in GH. 4- Aspergillus, Chaetomium, Emericella, Alternaria and Penicillium were the most common genera of fungi isolated from the four localities. Aspergillusjaponicus, A.jlavus, A. terreus, Chaetomium globosum, Emericelh nidulans, Alternaria alternata and Penicillium chrysogenum were the most prevalent species of those genera. 5- In case of phyllosphere fungi, Acremonium strictum, Aspergillus

aegyptiacus, A. fumigatus, A. ochraceus, Cladosporium oxysporum, Cochliobolus hawaiiensis, Doratomyces microsporus, Fusarium oxysporum, Penicillium corylophilum, P. roquefortii, Rhizopus stolonifer, Setosphaeria rostra/a, Stachybotrys chartarum and Ulocladium botrytis were isolated with high or moderate frequency from GH; Aspergillus versicolor, Cladosporium sphaerospermum, Epicoccum nigrum, Eurotium amstelodami, Penicillium brevicompactum, P. citrinum, Scopulariopsis brevicaulis, Setosphaeria rostra/a, Stachybotrys