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Chromosome variation in protoplast-derived potato plants

Theoretical and Applied Genetics volume 63, pages 265–272 (1982)Cite this article

Summary

Chromosomes have been studied in protoplast-derived potato plants of the tetraploid cultivars Maris Bard and Fortyfold. A high degree of aneuploidy was found amongst the regenerants of both cultivars but the nature of the chromosome variation differed. The Maris Bard regenerants were characterised by high chromosome numbers, a wide range of aneuploidy (46–92) and a low percentage of plants with the normal chromosome number (2n = 48), whereas a much higher proportion of the Fortyfold regenerants had 48 chromosomes and the variants were within a more limited aneuploid range. In both cultivars chromosome variation was found between calluses, within calluses and even within shoot cultures. The origin of the chromosome variation and the differences found between the two cultivars are discussed.

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Affiliations

  1. Biochemistry Department, Rothamsted Experimental Station, Harpenden, Herts, UK

    A. Karp, R. S. Nelson, E. Thomas & S. W. J. Bright

Authors
  1. A. Karp
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  2. R. S. Nelson
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  3. E. Thomas
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  4. S. W. J. Bright
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Additional information

We regret to report the death of Emrys Thomas since the initiation of this work

Communicated by R. Riley

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Karp, A., Nelson, R.S., Thomas, E. et al. Chromosome variation in protoplast-derived potato plants. Theoret. Appl. Genetics 63, 265–272 (1982). https://doi.org/10.1007/BF00304006

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  • DOI: https://doi.org/10.1007/BF00304006

Key words

  • Potato protoplasts
  • Regeneration
  • Chromosome variation