Germination Improvement of Three Pine Species ( Pinus ) After Diffuse Coplanar Surface Barrier Discharge Plasma Treatmen
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Germination Improvement of Three Pine Species (Pinus) After Diffuse Coplanar Surface Barrier Discharge Plasma Treatment B. Šerá1 · M. Šerý2 · A. Zahoranová3 · J. Tomeková3 Received: 23 June 2020 / Accepted: 29 August 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Seed modification by atmospheric pressure non-thermal plasma treatment was tested on pine species. The Diffuse Coplanar Surface Barrier Discharge (DCSBD) with expose times of 0 s, 1 s, 3 s, 5 s, 10 s, 30 s, 60 s was used on seed treatment of Pinus sylvestris, Pinus nigra and Pinus mugo. The effect of plasma treatment on the chemical bonds on the seed surface was studied using the Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy (ATR-FTIR). Characteristics of seed germination and early growth were measured. ATR-FTIR surface diagnostics did not show any damage. Changes in the peak intensities indicated the presence of oxygen and nitrogen-containing groups, or a reduction of the lipid layer on the surface. Various statistically significant effects of the three species of seeds treated with DCSBD treatment were recorded. No significant differences were found between control sample and plasma treated ones, but some positive trends were obtained. Positive trends were recorded in germinated and growing seeds of all three species mainly after 3 s exposures. Exposure times from 10 s had an inhibitory effect. Based on the results obtained, it can be recommended that forest nurseries performance of nonthermal plasma modification of seeds should be evaluated to measure the durability of the observed growth characteristics. Keywords Pine seedlings · Stress · Non-thermal plasma treatment · Early growth
Introduction Pines (Pinus L.) are the most common gymnosperms that come in many taxon species. They are valuable and commercially important trees. Most species are sources of wood, wood products and resins, many are grown for reforestation in rural landscape * B. Šerá [email protected] 1
Department of Landscape Ecology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 842 15 Bratislava, Slovak Republic
2
Department of Physics, Faculty of Education, University of South Bohemia, Jeronymova 10, Ceske Budejovice, Czech Republic
3
Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, 842 48 Mlynská Dolina, Bratislava, Slovak Republic
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Vol.:(0123456789)
Plasma Chemistry and Plasma Processing
and as ornamentals in urban areas. They are also ecologically significant, as some species of pine trees make up the dominant layer of many natural communities and habitats. Seed germination strongly affects the outcomes of species reproduction on population and community dynamics in the landscape. Seed germination and seedling development vary among plant species influenced by various biological and environmental factors. For better germination and early growth, it is possible to use chemical (phosphorus and potassium)
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