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Taxonomic studies ofAsarum sensu lato

I. Karyotype and C-banding pattern inAsarum s. str.,Asiasarum andHeterotropa

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Abstract

Fourteen species ofAsarum s. str.,Asiasarum andHeterotropa were studied cytotaxonomically. Their karyotypes and C-banding patterns were examined in detail. The results obtained were different in some important respects from previous reports related to the chromosomes of these plants, and were partially disharmonious with the assumptions presented for the relationships among these genera by some previous workers. Furthermore, it was confirmed thatAsarum s. str. (2n=26) (excludingAsarum leptophyllum),Asiasarum (2n=26),Heterotropa (2n=24) andAsarum leptophyllum (2n=24) are distinct from one another in the karyotype and the C-banding pattern of a few pairs of the small chromosomes in each set. The significance of these small chromosomes in considering the relationships among the plants concerned is discussed.

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Authors and Affiliations

  1. Makino Herbarium, Faculty of Science, Tokyo Metropolitan University, Setagaya, 158, Tokyo

    Takashi Sugawara

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  1. Takashi Sugawara
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Sugawara, T. Taxonomic studies ofAsarum sensu lato. Bot Mag Tokyo 94, 225–238 (1981). https://doi.org/10.1007/BF02488612

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  • DOI: https://doi.org/10.1007/BF02488612

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