Fungi associated with Heterodera schchtii in Jordan. I. Identity and incidence

H. Saleh, A. N. Qadri

Abstract


The mycoflora associated with Heterodera schachtii in Jordan has been investigated. Eight fungal species were isolated from white and new brown cysts at harvest time. Verticillium chlamydosporium, Aspergillus /lavus, Fusarium oxysporum and F. solani were the most common fungi. Fourteen more fungi were isolated from cysts or cyst contents two months after harvest. A. erythrocephalus, A. fumigatus, A. versicolor and Penicillium aurantiogriseum were most common among those fungi. Only 29.8% of cysts were healthy at this time. Direct microscopic observation of cysts at the same time showed thad 72.4% of cysts are associated with fungal structures in the field.

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