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Chromosome studies in the Scilleae. II

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Summary

1. The chromosomes ofBellevalia romana have been illustrated and their lengths measured at various stages of mitosis and meiosis. They contract in length to one-eleventh between pachytene and metaphase (cf. Belling).

2. The somatic chromosomes ofScilla italica consist of eight morphologically distinct pairs. At meiosis four classes of bivalents can be recognised. Chiasma formation is an indirect function of length as inStenobothrus andHyacinthus amethystinus. Terminalisation is more complete in each chiasma class in the short chromosomes than in the long ones.

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References

  • Belling, J. (1928). “Nodes and chiasmas in the bivalents ofLilium with regard to segmental interchange.”Biol. Bull. 54, 465–70.

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  • —— (1932). “The origin and behaviour of chiasmata. VI.Hyacinthus amethystinus.”Biol. Bull. 63, 368–71.

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  • Darlington, C. D. andDark, S. O. S. (1932). “The origin and behaviour of chiasmata. II.Stenobothrus parallelus.”Cytologia,3, 169–85.

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Authors and Affiliations

  1. John Innes Horticultural Institution, Merton

    S. O. S. Dark

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  1. S. O. S. Dark
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Dark, S.O.S. Chromosome studies in the Scilleae. II. Journ. of Genetics 29, 85–98 (1934). https://doi.org/10.1007/BF02981786

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  • DOI: https://doi.org/10.1007/BF02981786

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