Effects of auxins and cytokinins on epigenetic instability of callus-propagated Kalanchoe blossfeldiana Poelln. View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1988-01

AUTHORS

A. Varga, L. H. Thoma, J. Bruinsma

ABSTRACT

A main problem in the vegetative propagation of ornamental plants in vitro is the epigenetic instability of cells removed from their organized environment. With calluses of leaf explants of Kalanchoe blossfeldiana Poelln., cv. Yucatan, the role of plant growth regulators (PGRs) in the occurrence of fasciation was studied. In various combinations of auxins and cytokinins, the auxin 2,4-D (2,4-dichlorophenoxyacetic acid) gave only deformed, inseparable shoot primordia. The most rapid callus induction with regeneration of well-developed sprouts was obtained with the natural IAA (indoleacetic acid) and Z (zeatin). As a first symptom of fasciation, aberration in decussate phyllotaxis can be observed. At increasing concentrations of IAA + Z, this symptom gradually decreased but fasciation proper increased. The optimum concentration was at 1 μM for both PGRs. Reduction of exposure to the PGRs from six to three weeks reduced the epigenetic instability. More... »

PAGES

223-231

References to SciGraph publications

  • 1948-06. Fasciation in THE BOTANICAL REVIEW
  • 1965. Origin of fasciation in DIFFERENZIERUNG UND ENTWICKLUNG / DIFFERENTIATION AND DEVELOPMENT
  • Identifiers

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    http://scigraph.springernature.com/pub.10.1007/bf00033646

    DOI

    http://dx.doi.org/10.1007/bf00033646

    DIMENSIONS

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