RESEARCH PAPER
Effectiveness of pulsed radio frequency in seed quality improvement of vegetable plant
species
Bert van Duijn
3,4
1
Department of Nursery and Seed Science, Research Institute of Horticulture, Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland
2
Laboratory of Plant Ecophysiology, Faculty of Biology and Envoronmental Protection, 10 University of Łódź, Banacha 12/16, 92-237 Łódź, Poland
3
Institute of Biology Leiden, Sylviusweg 72, 2333 BE, Leiden, The Netherlands
4
Fytagoras BV, Sylviusweg 72, 2333 BE Leiden, The Netherlands
Acceptance date: 2019-04-25
Publication date: 2019-10-25
Int. Agrophys. 2019, 33(4): 463-471
KEYWORDS
TOPICS
ABSTRACT
The biggest problem, in ecological vegetable seed production, is low germination mostly caused by high seed infection with fungi and a shortage of effective biological agents eliminating pathogens. Therefore, pro-ecological methods of seed quality enhancement are being searched, increasing the profitability of seed production by improving the seed sowing value. The aim of the work was to evaluate the effectiveness of pulsed radio frequency (PRF) on seed quality of selected vegetable cultivars. The obtained results from conducted research in laboratory, greenhouse and field conditions indicate a protective effect of PRF treatment by reduction of beetroot, lettuce and garden dill seed-borne fungi, and the improvement of their health status and seed germination. Pre-sowing application of PRF resulted in 60-80% reduction of seed infestation with fungi, depending on the plant species. This treatment improved the dynamics of seed germination, plant emergence, growth, and increased chlorophyll content and gas exchange in leaves. The most beneficial results were obtained in beetroot, in which the problem of seed production is associated with high seed infestation with mycoflora and the presence of germination inhibitors in the seed coat. The results indicate the high efficiency of the applied PRF and its usefulness in ecological and integrated seed production.
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