GENETIC-HETEROGENEITY RESULTING FROM MICE LIAL ELONGATION OF NICB SUPPRESSORS FROM ASPERGILLUS-NIDULANS

From a nice strain of the filamentous fungus Aspergillus nidulans, whi ch requires nicotinic acid, ten revertants were isolated and analyaed for micelial elongation. MSE sunicB strains were grown at different co nditions of incubation and culture media. The experiment was carried o ut five times, and the colonies diameters were measured daily. The mic elial elongation of nicB suppressors was statistically evaluated by th e ''t'' test for growth efficiency, and by the ''split-plot factorial design'' method for variance analysis. A genetic heterogeneity among t he strains was observed.