Skip to main content
SpringerLink
Log in

The genetic structure ofTulipa

I. A chromosome survey

  • Published:
Journal of Genetics Aims and scope Submit manuscript

Summary

1. The basic haploid chromosome number in the genusTulipa is 12. Polyploid series occur in both the subsections Eriostemones and Leiostemones.

2. Although the diploid species probably reproduce sexually in the wild, the polyploids must be purely clonal since no aneuploids have been found.

3. Two main types of change have affected the chromosome morphology of the genus. Genotypic change of size and regulated structural change altering the position of the centromere have separated the genus into three groups with large, medium and small chromosomes. Random structural change has produced complements with reduplicated fragments (T. galatica) and with clearly unmated chromosomes (T. Gesneriana var. Zomerschoon).

4. Evidence from external and chromosome morphology, from intersterility and from the time at which meiosis occurs, points to the conclusion that the subgroupClusiana of the Leiostemones is as distinct from the other subgroups as it is from the Eriostemones.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Darlington, C. D. (1929). “Structural hybridity in the Tradescantiae.”J. Genet. 21, 207–86.

    Article  Google Scholar 

  • -- (1932a).Recent Advances in Cytology. London.

  • —— (1932b). “The control of the chromosomes by the genotype.”Amer. Nat. 66, 25–51.

    Article  Google Scholar 

  • Hall, Sir A. D. (1929).The Book of the Tulip. London.

  • -- (1936). “Polyploidy inTulipa.”J. Linn. Soc. (in the Press).

  • La Cour, L. (1931). “Improvements in everyday technique in plant cytology.”J. Roy. micr. Soc. 51, 119–26.

    Google Scholar 

  • Mather, K. (1936). “Cytological studies inPrunus.”Genetica (in the Press).

  • Mol, W. E. de (1929). “The originating of 2x and 4x pollen grains in Duc van Thol tulips,T. suaveolens, dependent upon the method of culture applied.” Ibid.11, 119–212.

    Article  Google Scholar 

  • Nawaschin, M. (1926). “Variabilität des Zellkerns beiCrepis-Arten.”Z. Zellforsch. 4, 171–215.

    Article  Google Scholar 

  • Newton, W. C. F. (1927). “Chromosome studies inTulipa.”J. Linn. Soc. 47, 339–54.

    Google Scholar 

  • Newton, W. C. F. &Darlington, C. D. (1929). “Meiosis in Polyploids. I.”J. Genet. 21, 1–56.

    Google Scholar 

  • Randolph, L. F. (1935). “A new fixing fluid and a revised schedule for the paraffin method in plant cytology.”Stain Tech. 10, 3.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. John Innes Horticultural Institution, Merton, London

    Margaret Upcott & L. La Cour

Authors
  1. Margaret Upcott
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. L. La Cour
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Upcott, M., La Cour, L. The genetic structure ofTulipa . Journ. of Genetics 33, 237–254 (1936). https://doi.org/10.1007/BF02982534

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02982534

Keywords

Search

Navigation