Effect of plasma on radish seeds

First-time cooperation between the Leibniz Institutes IGZ and INP

27.02.2024
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The researchers recording data from the radish cultures at IGZ Photo: IGZ/S. Münzel
The researchers recording data from the radish cultures at IGZ Photo: IGZ/S. Münzel

At the Leibniz Institute of Vegetable and Ornamental Crops (IGZ), Dr Sandra Münzel (Research Group Open Field Horticultural Systems) and intern Lina Krause are testing the application of plasma-based treatment systems in vegetable crops. They are drawing on research and development work carried out by biologists Dr Henrike Brust and Dr Nicola Wannicke at the Leibniz Institute for Plasma Science and Technology (INP) in Greifswald, Department of Plasma Bioengineering. This work has laid the foundation for further co-operation between the two Leibniz Institutes.

The treatment of plant seeds before sowing aims to reduce microbial contamination on the seed coat, but also to stimulate seed germination as well as plant development and growth. At the INP, the researchers also investigate whether plasma treatments can improve plant adaptation to stress and plant health. There are already several small companies in Europe that offer plasma processes for seed hygiene.

The first applications of plasma treatment in vegetable crops were carried out at the INP. And now the method was trialled on radish (Raphanus sativus L.) seeds of the "Rudi" cultivar at IGZ. For this purpose, an experimental setup was developed using root boxes, so-called rhizotrons. These boxes, which can be viewed from the side, make it possible to see not only the above-ground biomass but also the root system of the plants. Growth parameters such as length, fresh and dry weights of roots, tubers and shoots, number of leaves and diameter of tubers were recorded as part of the investigations.

The data is currently being analysed for an initial joint publication. This should form the basis for further co-operation between the two Leibniz institutes. In future work, the experimental setup will be continued using rhizotrons.