Abstract
Measurement of key morphological indices of chemostat cultures of Penicillium chrysogenum, by image analysis, was carried out manually at Strathclyde University and semi-automatically at Birmingham University using identical preserved samples. Using both methods, the value of the mean hyphal growth unit was found to decrease with decreasing dilution rate. Although similar trends were observed for data obtained at Strathclyde and Birmingham, the values of key morphological indices measured by semi-automated analysis were consistently higher than the values obtained by manual analysis. This discrepancy was as a result of the different analysis methods, particularly with respect to clump analysis. An electronic image transfer method is discussed which would allow analysis of a given image set at either site by either method. © Rapid Science Ltd. 1998
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