Studies in the genusColletotrichum
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A species ofColletotrichum isolated fromCarthamus tinctorius was found to beC. capsici. This gave rise to several saltants in cultures. A comparative study of four of the saltants and the parent was made. The saltants showed differences in growth characters, size of acervuli, presence or absence of setæ and sporulation. The setæ were found to be of two kinds and the size was much affected by environment. The medium influenced the size and production of spores. Saltants differed in their pathogenic ability. It is suggested that in the creation of new species ofColletotrichum pathogenic capacity alone should not be given much prominence.C. capsici constantly gives rise to new races in cultures.
KeywordsFrench Bean Cotton Boll Carthamus Tinctorius Microscopic Character Compact Growth
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