Journal of Genetics

, 35:421 | Cite as

Variation in the flaked lines ofLathyrus odoratus

  • Yoshitaka Imai
  • Yasuo Hnuma


1. According to Punnett, the constitution of our flaked sweet pea seems to beG 1G 1d 3 d 3. In the flaked America the offspring consisted of 3·54% self-coloured, 2·93% dark-flaked, 93·22% flaked, and 0·32% tinged, showing the rate of inconstancy to be high.

2. The inconstancy of the flaked is attributed to the following recurrent gene mutations:\(\begin{gathered} G_1 \leftarrow G_1 \prime \to g_1 \prime \hfill \\ d_3 \leftrightarrows D_3 \hfill \\ \end{gathered} \)

The self-coloured is due to the change fromG 1′ toG 1, the dark-flaked to that fromd 3 toD 3, and the tinged to that fromG 1′ tog 1′.

3. Punnett’s hypothesis agrees well in the matter of genotypes of the mutant forms that appeared in our culture. His material was derived from Senator, which is a flaked line with high constancy. Our flaked America and Felix, however, showed marked inconstancy in the related genes. Somatic variation with genic changes also occurred.


Recurrent Mutation Somatic Variation Flake Fine Mosaic Plant Flake Petal 
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  1. Imai, Y. (1934). “On the mutable genes ofPharbitis, with special reference to their bearing on the mechanism of bud variation.”J. Coll. Agric. Tokyo,12, 479–523.Google Scholar
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  3. —— (1935b). “The mechanism of bud variation.”Amer. Nat. 69, 587–95.CrossRefGoogle Scholar
  4. Punnett, R. C. (1936). “The flaked sweet pea.”J. Genet. 32, 171–7.CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 1938

Authors and Affiliations

  • Yoshitaka Imai
  • Yasuo Hnuma

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