Abstract
IN a recent communication, Calpouzos1 reported that prolonged selection of sporulating material from recent single or mass spore isolates of the fungus Cercospora musae gradually increased the intensity and uniformity of sporulation in later cultures even though the spores selected were always of asexual origin. He suggested that if the original isolates had been heterokaryotic this observation was in agreement with the gradual sorting out, by selection, of a nuclear type having a greater spore-producing potential. Although this is a possibility in the case reported by Calpouzos, a similar situation has been encountered in my own experiments under conditions where heterokaryosis is ruled out as a possible explanation.
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References
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JINKS, J. Somatic Selection in Fungi. Nature 174, 409–410 (1954). https://doi.org/10.1038/174409b0
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DOI: https://doi.org/10.1038/174409b0
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