4.3 Article

Improved in vitro rooting in liquid culture using a two piece scaffold system

Journal

ENGINEERING IN LIFE SCIENCES
Volume 20, Issue 3-4, Pages 126-132

Publisher

WILEY
DOI: 10.1002/elsc.201900133

Keywords

3D printing; in vitro rooting; micropropagation; plant tissue culture; prototyping; root-stand design

Funding

  1. Ontario Ministry of Agriculture, Food and Rural Affairs' Gryphons LAAIR program
  2. Gosling Foundation, Guelph, Canada

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Plant tissue culture techniques have been used to propagate horticultural crops at a commercial scale for more than three decades. However, due to the high cost it is generally only used for high value crops. To increase production efficiency and make micropropagation viable for a wider range of species, new approaches to address key steps of the process with high labor inputs need to be evaluated. For this study, a two-piece scaffold system was designed, prototyped using 3D printing, and tested to physically hold plants upright thereby facilitating liquid based rooting. This system was evaluated with Malus domestica, Betula lenta, and Musa sp. using static liquid culture as well as rocker based temporary immersion system and compared to rooting in semi-solid based medium as is commonly practiced. Significantly, earlier rooting was observed in all three species in liquid when compared to semi-solid culture system, and plants cultured in liquid on the rocker generally performed better than those in static liquid. In addition to quicker, more uniform rooting, reducing labor requirements, and preventing root damage. This newly designed system is simple, easy to use, will help to improve efficiency, and reduce the cost of micropropagation.

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