Summary
The techniques of microspore and protoplast regeneration starting from dihaploid Solanum tuberosum plants has been improved to such an extent that the production of more than 2000 microspore derived A1 plant lines and of several hundred protoplast derived plantlets has become possible. Further, from the dihaploid Solanum species S. phureja the regeneration of microspores to plants, and from the species S. infundibuliforme, S. sparsipilum and S. tarijense the regeneration of protoplasts to calluses, has been achieved. The plants descending from the two single cell culture systems are compared with reference to phenotypic markers and economic qualities. Some principles characteristic for either microspore or protoplast derived plants are examined and their significance is discussed. The results are compiled into an extended analytical synthetic breeding scheme based on a stepwise reduction of the autotetraploid to the monohaploid level and a subsequent controlled combination to a new synthetic completely heterozygous tetraploid potato.
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Communicated by H.F. Linskens
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Wenzel, G., Schieder, O., Przewozny, T. et al. Comparison of single cell culture derived Solanum tuberosum L. plants and a model for their application in breeding programs. Theoret. Appl. Genetics 55, 49–55 (1979). https://doi.org/10.1007/BF00285189
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DOI: https://doi.org/10.1007/BF00285189