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Biologia Plantarum

, Volume 33, Issue 3, pp 206–210 | Cite as

Variation in organisation and copy number of ribosomal RNA genes inPetunia hybrida somaclones

  • Shirley Anderson
  • A. C. Lewis-Smith
  • Maria Chamberlain
  • S. M. Smith
Article

Abstract

The copy number of genes encoding 5S ribosomal RNA has been found to be constant in Petunia hybrida plants regenerated from protoplast and leaf disc-derived callus cultures. However, in one somaclone a heritable change in the length of the major 5S rDNA repeat has arisen. Despite the constant copy number of 5S rRNA genes, that of the 18S–25S rRNA genes is found to very by at least ten-fold. The relevance of these findings to ribosomal RNA gene variability and to somaclonal variation is discussed.

Keywords

Regenerate Plant Callus Culture Somaclonal Variation Petunia Hybrida Culture Callus Tissue 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • Shirley Anderson
    • 1
  • A. C. Lewis-Smith
    • 1
  • Maria Chamberlain
    • 1
  • S. M. Smith
    • 1
  1. 1.Department of BotanyUniversity of EdinburghScotland

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