Chromosome numbers of some Japanese Dioscorea species

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  • 日本産ヤマノイモ属の染色体数
  • 日本産ヤマノイモ属の染色体数〔英文〕
  • ニホンサン ヤマノイモゾク ノ センショクタイスウ エイブン

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Abstract

Chromosome numbers are reported for eight species and one variety of Japanese Dioscorea. The counts were 2n=20 in D. tokoro, D. septemloba, D. quinqueloba and D. izuensis, although D. asclepiadea, D. nipponica and D. septemloba var. sititoana had 2n=40. In D. tenuipes, three chromosome numbers, (2n=20, 30, 40) and in D. gracillima, two numbers, (2n=20, 40) were found.

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