細胞性粘菌の分類学的研究 : 第3報 Polysphondylium candidum群の性

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A term "Polysphondylium candidum complex" was applied to the Polysphondylium strains bearing large spores and exhibiting elongation of sorophores. Macrocyst formation was examined in 27 strains of this complex. Based on the results, the strains were classified into 3 groups depending on their sexuality. (1) The heterothallic group, comprising 19 strains and including 2 mating types; the strains were confirmed as P. candidum. (2) The non-homothallic strain SH1, the P. filamentosum type strain that was distinctly distinguished from P. candidum in the mating system. (3) The homothallic group, comprising 9 strains. To determine whether this group can be accommodated in a single undescribed species, a further study on its morphology is required.