Abstract
The cultural behaviour of Selenophoma donacis (Pass.) Sprague & A. G. Johnson (Septoria oxyspora Penzig & Sacc.) was studied on ten agar media under dark incubation and near-ultraviolet (NUV) irradiation at four temperatures. Growth and sporulation were significantly greater under NUV irradiation with optimum temperatures of 20° and 15° respectively. The medium determined spore type and sporulation intensity. Conidial colonies were yeast-like in appearance in contrast to the hyphal growth of pycnidial colonies. Pycnidia and sclerotia were induced on media supporting hyphal growth and absent from conidial media. Maximum sclerotial production occurred under dark incubation at 15°. Conidia were generally larger and more variable in shape than pycnidiospores.
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