Abstract

The use of liquid instead of solid culture medium for the micropropagation of plants offers advantages such as better access to medium components and scalability through possible automation of the processes. The objective of this work was to compare a new temporary immersion bioreactor (TIB) to solid medium culture for the micropropagation of a selection of tree species micropropagated for commercial use: Nordmann fir (Abies nordmanniana (Steven) Spach), Eucalyptus (E. grandis x E. urophylla), Downy birch (Betula pubescens Ehrh), and Curly birch (Betula pendula var. carelica). Cultivation of explants in the TIB resulted in a significant increase of multiplication rate and fresh weight of Eucalyptus and B. pendula, but not Betula pubescens. In addition, the fresh weight of embryogenic tissue and the maturation frequency of somatic embryos increased significantly when an embryogenic cell line of A. nordmanniana was cultivated in the TIB compared to solid culture medium. These results demonstrate the potential for scaling up and automating micropropagation by shoot multiplication and somatic embryogenesis in commercial tree species using a temporary immersion bioreactor.

Keywords

forest trees; temporary immersion; somatic embryogenesis; micropropagation

Published in

Forests
2017, Volume: 8, number: 6, article number: 196
Publisher: MDPI AG

SLU Authors

• Egertsdotter, Ulrika

  • Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences
    

• Businge, Edward

  • Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Other Biological Topics


Publication identifier

DOI: https://doi.org/10.3390/f8060196

Permanent link to this page (URI)

https://res.slu.se/id/publ/87826