Cytological variation and evolution withinPelargonium sectionHoarea (Geraniaceae)

@article{Gibby2004CytologicalVA,
  title={Cytological variation and evolution withinPelargonium sectionHoarea (Geraniaceae)},
  author={M. H. Gibby and Silke C Hinnah and Elizabeth M. Marais and Focke Albers},
  journal={Plant Systematics and Evolution},
  year={2004},
  volume={203},
  pages={111-142}
}
Chromosome numbers of 65 species of sect.Hoarea have been determined. These show three basic chromosome numbers, x = 11, 10 and 9. Only a few species are tetraploid. In five species both diploid and tetraploid cytotypes are reported. Several cases of deviations in chromosome numbers and cytological abnormalities were found, most of these being related to the presence of B chromosomes that occur in eight species. Evidence is presented to suggest that the basic chromosome numbers of x = 10 and x… CONTINUE READING

From This Paper

Topics from this paper.

References

Publications referenced by this paper.
Showing 1-8 of 8 references

Taxonomy and phylogeny of Pelargonium section Campylia ( Gera - niaceae ) . - S

  • L. VAN
  • African J . Bot .
  • 1991

Delimitation of Pelargonium sect . Glaucophyllum ( Gera - niaceae ) . - P 1

  • S.-N. Yu, W. A. H. HORN
  • Syst . Evol .
  • 1990

Pelargoniums of southern Africa , 3

  • M. GIBBY
  • 1988

Chromosome studies on South African vascular plants . - Bot . Not . 122 : 398 - 408 . - 1987 : Pelargonium calvli - henrici ( Geraniaceae ) , a new species from the Western Cape Province . - P 1

  • J. PAYET
  • Etude des caractbres morphologiques , anatomiques…
  • 1982

The origin of supernumerary chromosomes in natural populations of Clarkia elegans . - Evolution 5 : 142 - 57 . - 1953 : The mechanism of evolution in the genus Clarkia

  • H. R RILEY
  • 1973

Karyological studies in Pelargonium sectt . Ciconium , Dibrachya , and Jenkinsonia ( Geraniaceae ) . - P 1

  • J. B. HAIR, E. J. BEUZENBERG
  • Syst . Evol .
  • 1958

Chromosome evolution by Robertsonian change in Gibasis ( Commelinaceae ) Aspects of chromosome evolution in higher plants

  • H. REES

Similar Papers

Loading similar papers…