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Plant regeneration from mesophyll protoplasts of Centaurea cyanus, Senecio x hybridus and Callistephus chinensis

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Abstract

Protoplasts were isolated from leaves of glasshouse-grown plants of Centaurea cyanus and axenic shoot cultures of Senecio x hybridus. Upon culture, using modified MS-based media, protoplasts of both systems entered division to produce callus, followed by plant regeneration. Leaf protoplasts of Callistephus chinensis entered sustained division only following the preconditioning for 24h of peeled leaf tissues on agar-solidified MS-based medium. Protoplasts were also isolated from cell suspensions of C. chinensis and divided in MS-based or KM media. However, only leaf mesophyll protoplasts of Callistephus produced callus, which developed shoots.

The establishment of protoplast-to-plant protocols for these ornamental species has provided a basis for broadening their gene pools through somatic hybridisation.

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Abbreviations

BAP:

6-benzylaminopurine

NAA:

α-naphthaleneacetic acid

2,4-D:

2,4-dichlorophenoxyacetic acid

MS:

Murashige and Skoog (1962)

KM:

Kao and Michayluk (1975)

g.f.wt.:

gram fresh weight

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Authors and Affiliations

  1. Plant Genetic Manipulation Group, Department of Botany, University of Nottingham, NG7 2RD, Nottingham, UK

    V. Pillai, M. R. Davey & J. B. Power

Authors
  1. V. Pillai
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  2. M. R. Davey
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  3. J. B. Power
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Communicated by I. Potrykus

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Pillai, V., Davey, M.R. & Power, J.B. Plant regeneration from mesophyll protoplasts of Centaurea cyanus, Senecio x hybridus and Callistephus chinensis . Plant Cell Reports 9, 402–405 (1990). https://doi.org/10.1007/BF00232409

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  • DOI: https://doi.org/10.1007/BF00232409

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