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Plant regeneration from leaf protoplasts of Brassica oleracea var. italica CV Green Comet broccoli

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Abstract

A procedure is described for regeneration of plants from leaf protoplasts of the hybrid broccoli cultivar, Green Comet (Brassica oleracea var italica). The totipotency of protoplasts isolated from plants regenerated from hypocotyl explants (GCR) was greater than that of protoplasts from plants grown directly from seed (GC). Using medium B developed by Pelletier et al (1983), division efficiencies greater than 70% were obtained in leaf protoplasts isolated from GCR. Approximately 1% of these protoplasts formed calli on solidified medium; 77% of the calli regenerated shoots. In contrast, protoplasts from seed-grown material showed a lower division efficiency (15–22%) and fewer protoplast-derived calli produced shoots. Some of the 178 protoplast-derived plants grown to maturity had variant phenotypes.

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Abbreviations

NAA:

napthalene acetic acid

BA:

6-benzylaminopurine

MES:

1-morpholino-ethane sulfonate

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Author information

Author notes

  1. D. Robertson

    Present address: Department of Zoology, Duke University, 27706, Durham, NC, USA

Authors and Affiliations

  1. Department of Plant Breeding, Cornell University, 14853, Ithaca, NY, USA

    D. Robertson & E. D. Earle

Authors
  1. D. Robertson
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  2. E. D. Earle
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Additional information

Communicated by A. R. Gould

This work has been submitted by D. R. in partial fulfillment of the requirement for the Ph.D. degree

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Robertson, D., Earle, E.D. Plant regeneration from leaf protoplasts of Brassica oleracea var. italica CV Green Comet broccoli. Plant Cell Reports 5, 61–64 (1986). https://doi.org/10.1007/BF00269720

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  • DOI: https://doi.org/10.1007/BF00269720

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