Sugarbeet (Beta vulgaris L.): Shoot regeneration from callus and callus protoplasts

  • Dovzhenko A
  • Koop H
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Abstract

The successful application of recombinant DNA technology for crop plants requires efficient regeneration systems. A detailed study on the regeneration potential of callus and callus-derived protoplasts of a recalcitrant species, sugarbeet, was performed. A reproducible and highly efficient method for induction of regenerable friable callus was established from etiolated hypocotyl explants. A reduced sucrose concentration proved beneficial. Successful shoot regeneration could be demonstrated in 10 out of 12 tested lines. Seed germination, followed by callus induction and shoot regeneration required only a single culture medium. Additionally, the regeneration capacity of roots and root-derived callus was demonstrated. Highly efficient plant regeneration was also achieved when using protoplasts isolated from regenerable friable callus induced on etiolated hypocotyls explants. To our knowledge this represents the first report on callus protoplast to plant regeneration in sugarbeet.

Author-supplied keywords

  • Beta
  • Callus
  • Protoplast culture
  • Shoot regeneration

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Authors

  • Alexander Dovzhenko

  • Hans Ulrich Koop

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