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Plant Systematics and Evolution

, Volume 245, Issue 3–4, pp 163–168 | Cite as

Physical mapping of rDNA sites in possible diploid progenitors of polyploid Festuca species

  • J. A. Harper
  • I. D. Thomas
  • J. A. Lovatt
  • H. M. Thomas
Article

Abstract.

Festuca species form a polyploid series but only two of the diploid species have been firmly proposed as progenitors of any polyploid. The number and distribution of rDNA sites on the chromosomes of F. scariosa (section Scariosae) and the four diploid species that comprise section Montanae are presented with their relative DNA amounts and key morphological features. Comparisons of the results with those of some polyploid Festuca species from section Bovinae published previously indicate that F. scariosa and F. altissima could be diploid progenitors of the polyploids. It is unlikely that any one of the other three Montanae species is a progenitor of these polyploids.

Key words

Festuca phylogeny fluorescence in situ hybridisation rDNA physical mapping C-value 

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Copyright information

© Springer-Verlag Wien 2004

Authors and Affiliations

  • J. A. Harper
    • 1
  • I. D. Thomas
    • 1
  • J. A. Lovatt
    • 1
  • H. M. Thomas
    • 1
  1. 1.Institute of Grassland and Environmental ResearchPlas GogerddanUK

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