Abstract
Conidia and conidiophores of selected species of Penicillium and Aspergillus were examined by light microscopy and scanning electron microscopy. SEM micrographs were taken from frozen hydrated material and of critical point dried material after various chemical fixation procedures. Comparison between the techniques were made with emphasis on the conidial dimensions and surface detail of the conidia, conidiogenous cells and conidiophore elements. Frozen hydrated specimens reveal conidial dimensions closest to the living material and show significant shrinkage in chemical fixed and critical point dried specimens.
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