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Polyploidy in the Basidiomycete Cyathus stercoreus

Benjamin C. Lu
American Journal of Botany
Vol. 51, No. 3 (Mar., 1964), pp. 343-347
Stable URL: http://www.jstor.org/stable/2440307
Page Count: 5
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Polyploidy in the Basidiomycete Cyathus stercoreus
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Abstract

Chromosome analysis of the basidiomycete Cyathus stercoreus (Nidulariaceae) reveals that certain chromosomes of the haploid complement structurally resemble one another. These like chromosomes exhibit with high frequency a tendency to form quadrivalents or to show secondary association at diplotene and diakinesis of meiosis, suggesting some degree of homology. This indicates that C. stercoreus is a tetraploid species. It is suggested that the polyploidy of the present species may have resulted from allotetraploidy involving species which may have been evolved from a single ancestor.

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