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On a monstrous flower and its linkage in the Japanese morning glory

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Summary

  1. 1.

    The heart leaf (h) and the “Shishi” form (si) are respectively transmitted as recessives to the normal.

  2. 2.

    Owing to the incomplete dominance of the H and Si factors the segregating ratios are each a 1 : 2 : 1.

  3. 3.

    About 1.2 per cent. of crossover occurs in a linkage between these two factors. By the convenient nature of incomplete dominance calculation of. linkage was directly made with the self-propagated specimens in the hybrid progeny.

  4. 4.

    The percentage of crossover is almost equal in the case both of coupling and repulsion.

  5. 5.

    The Si factor represents multiple effects on flower and leaf as well as cotyledon.

  6. 6.

    The grasped leaf found in the “Shishi” strain is due to the result of the additional effect of a punched factor (u).

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Literature referred to

  • Hagiwara, T. (1921). “On the Inheritance of Linked Genes in the Leaf of the Japanese Morning-glory. II.”Journal of the Scientific Agricultural Society, No. 224 (in Japanese).

  • Imai, Y. (1920). “Genetic Studies in Morning Glories. II.”Botanical Magazine, Tôkyô, Vol. xxxiv. (in Japanese).

  • - (1924a). “Genetic Studies in Morning Glories. IX. On the Behaviour of Factor for the Willow Leaf inPharbitis Nil”Ibid. Tôkyô, Vol. xxxviii. (in Japanese).

  • - (1924b). “Genetic Studies in Morning Glories. XI. On the Variegated and the Heart Linkage Groups inPharbitis Nil.”Ibid

  • - (1924c). “Genetic Studies in Morning Glories. XII. On the ‘Suhama’ and ‘Otafuku’ Leaves inPharbitis Nil”Ibid.

  • - (1924d). “Genetic Studies in Morning Glories. XIV. On the Factors Rolling up the Leaves inPharbitis Nil, with Special Reference to the Behaviour of the ‘Punched’ Leaves and their Linked Characters.”Ibid.

  • Miyake, K. andImai, Y. (1920). “Genetic Experiments with Morning Glories. I.”Ibid. Tôkyô, Vol. xxxiv. (in Japanese).

  • - (1921). “Genetic Experiments with Morning Glories. II.”Ibid. Tôkyô, Vol. xxxv. (in Japanese).

  • Sô, M. andNishimura, T. (1919). “Linkage in Morning Glory.”Journal of the Scientific Agricultural Society, No. 208 (in Japanese).

  • Takezaki, Y. (1918). “Inheritance of the Japanese Morning Glory. II.”Journal of the Japanese Breeders’ Association, Vol. i. No. 2 (in Japanese).

  • Tanaka, C. (1915).A Text-Book of Genetics, Tôkyô (in Japanese).

  • Toyama, K. (1916). “On some Mendelian Characters.”Journal of the Japanese Breeders’ Association, Vol. i. No. 1 (in Japanese).

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Authors and Affiliations

  1. Botanical Institute, Agricultural College, Tôkyô Imperial University, Komaba, Tôkyô

    K. Miyake & Y. Imai

Authors
  1. K. Miyake
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  2. Y. Imai
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Additional information

The results of the study on coupling were published in theBotanical Magazine, Vol. xxxv. pp. 101–115, 1921, in Japanese.

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Miyake, K., Imai, Y. On a monstrous flower and its linkage in the Japanese morning glory. Journ. of Gen. 16, 63–76 (1925). https://doi.org/10.1007/BF02983988

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  • DOI: https://doi.org/10.1007/BF02983988

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