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Biodiversity and Conservation

, Volume 20, Issue 2, pp 359–371 | Cite as

Crambe tataria: actions for ex situ conservation

  • Anna Piovan
  • Giancarlo Cassina
  • Raffaella Filippini
Original Paper

Abstract

In vitro micropropagation by direct organogenesis and somatic embryogenesis via callus was developed for Crambe tataria (Brassicaceae). C. tataria is an endemic species of the Pontic-Pannonic region, but it is also present in Italy, where it is localized in Friuli on a characteristic grassland formation, called “magredi”. C. tataria is regarded as an endangered species. Leaf and root explants were subjected to plant regulator treatments, which invoked different morphogenic responses. Leaf explants produced more callus than root explants and a higher amount of callus was obtained with 1 mg l−1 2,4-D in combination with 2 mg l−1 Kin. Somatic embryogenesis was obtained in calli maintained in a delayed subculture regime on media containing BAP in combination with NAA. Root explants cultured with BAP combined with NAA developed adventitious rosette shoots. Shoots rooted on half-strength MS media, and the number of roots per plantlet and their length were heavily dependent on sucrose content. The in vitro regenerated plantlets were acclimatized ex vitro and a mean of 50% of the plantlets survived and showed a true-to-type growth habit. This study describes the development of two in vitro micropropagation protocols, via direct organogenesis and via embryogenesis from callus, that are the basis for the application of in vitro tools for the establishment of basal collections with representative genetic diversity and for the long-term storage of plant genetic material.

Keywords

Conservation biotechnology Endangered species Micropropagation 

Abbreviations

BAP

Benzyl amino purine

Kin

Kinetin

MS

Murashige and Skoog medium

NAA

α-Naphtaleneacetic acid

2,4-D

2,4-Dichlorophenoxyacetic acid

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Anna Piovan
    • 1
  • Giancarlo Cassina
    • 1
  • Raffaella Filippini
    • 2
  1. 1.Botanical GardenUniversity of PaduaPaduaItaly
  2. 2.Department of BiologyUniversity of PaduaPaduaItaly

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