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Abstract
A total of 247 physiological and biochemical characters were assessed for the differentiation of 73 strains of Colletotrichum isolated from diseased strawberry plants with anthracnose symptoms. The strains had previously been grouped using data from a range of DNA analyses. Approximately 41% of the characters surveyed (i.e., 101/247) gave results that were in some way differential. The strains were grouped according to these differential characters by numerical analysis with Gower's general similarity coefficient and UPGMA average linkage clustering. The resulting dendrogram placed the strains in two major clusters. These groupings were confirmed by principal coordinates analysis based on the average distance measure. The ordination showed that few physiological or biochemical tests were discriminatory in isolation, in terms of separating the major clusters. However, strain groupings obtained by these methods strongly reflected previous rDNA and mtDNA molecular classifications.