Plant Systematics and Evolution

, Volume 172, Issue 1–4, pp 263–271 | Cite as

Robertsonian change in allies ofZebrina (Commelinaceae)

  • K. Jones


Meiotic pairing inTradescantia soconuscana 2n=26 (6M+16A+4T) suggests that it has a tetraploid constitution which is not apparent in its chromosome number. Its “nombre fondamental” of 32 indicates that it could have evolved from an ancestor with x=8 by a combination of Robertsonian fusion, hybridization and polyploidy. The 2n=16 (8A+8T) karyotype of a closely related diploid supports this. The allied genusZebrina may have followed a similar method of chromosome evolution.

Key words

Angiosperms Commelinaceae Tradescantia soconuscana Zebrina Chromosome evolution Robertsonian change 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Bowen, C. C., 1956: Freezing by liquid carbon dioxide in making slides permanent. — Stain Technol.31: 87–90.PubMedGoogle Scholar
  2. Darlington, C. D., 1929: Chromosome behaviour and structural hybridity in theTradescantiae. — J. Genet.21: 207–286.Google Scholar
  3. Holmquist, G., Dancis, B. M., 1980: A general model of karyotype evolution. — Genetica52/53: 151–163.Google Scholar
  4. Hunt, D., 1975: The reunion ofSetcreasea andSeparotheca withTradescantia. AmericanCommelinaceae 1. — Kew Bull.30: 443–458.Google Scholar
  5. —, 1980: Sections and series inTradescantia. AmericanCommelinaceae 9. — Kew Bull.35: 437–442.Google Scholar
  6. —, 1986:Campelia, Rhoeo andZebrina united withTradescantia. AmericanCommelinaceae 13. — Kew Bull.41: 401–405.Google Scholar
  7. John, B., Freeman, M., 1975: Causes and consequences of Robertsonian exchange. — Chromosoma (Berlin)52: 123–136.Google Scholar
  8. Jones, K., 1978: Aspects of chromosome evolution in higher plants. — Adv. Bot. Res.6: 119–194. — London: Academic Press.Google Scholar
  9. —, 1984: Mechanisms of chromosome change in the tribeTradescantieae (Commelinaceae). — InSharma, A. K., Sharma, A., (Eds.): Chromosomes in evolution of eukaryotic groups 2, pp. 143–168. — Boca Raton, FL: CRC Press.Google Scholar
  10. —, —, —, 1981: Contributions to the cytotaxonomy of theCommelinaceae. Chromosome evolution inTradescantia sectionCymbispatha. — Bot. J. Linn. Soc.83: 157–188.Google Scholar
  11. Kenton, A., 1981: Chromosome evolution in theGibasis linearis alliance (Commelinaceae). — Chromosoma (Berlin)84: 291–304.Google Scholar
  12. —, 1984: Robertsonian differentiation and preferential pairing revealed in species and F1 hybrids in theGibasis linearis group (Commelinacae). — Pl. Syst. Evol.144: 221–240.Google Scholar
  13. Mattsson, O., 1971: Cytological observations within the genusZebrina. — Bot. Tidsskr.66: 189–227.Google Scholar

Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • K. Jones
    • 1
  1. 1.Jodrell LaboratoryRoyal Botanic GardensKew, Richmond, SurreyEngland

Personalised recommendations