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https://doi.org/10.17559/TV-20260522003618

Laser Treatment Effects on Germination of Selected Medicinal and Insecticidal Plants

Ante Galić ; University of Zagreb Faculty of Agriculture, Department of Sustainable Technologies and Renewable Energy Sources, Svetošimunska cesta 25, 10000 Zagreb, Croa
Stjepan Pliestić ; University of Zagreb Faculty of Agriculture, Department of Sustainable Technologies and Renewable Energy Sources, Svetošimunska cesta 25, 10000 Zagreb, Croa
Martina Grdiša ; University of Zagreb Faculty of Agriculture, Department of Plant Biodiversity, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Ana Matin ; University of Zagreb Faculty of Agriculture, Department of Sustainable Technologies and Renewable Energy Sources, Svetošimunska cesta 25, 10000 Zagreb, Croa
Božidar Matin ; University of Zagreb Faculty of Forestry and Wood Technology, Svetošimunska cesta 23, 10000 Zagreb, Croatia
Ana Buljubašić ; University of Mostar, Faculty of Science and Education, Matice Hrvatske b.b., 88000 Mostar, Bosnia and Herzegovina
Karlo Špelić ; University of Zagreb Faculty of Agriculture, Department of Sustainable Technologies and Renewable Energy Sources, Svetošimunska cesta 25, 10000 Zagreb, Croa *
Ivan Brandić ; University of Zagreb Faculty of Agriculture, Department of Sustainable Technologies and Renewable Energy Sources, Svetošimunska cesta 25, 10000 Zagreb, Croa

* Dopisni autor.

Sažetak

Medicinal and aromatic plants are increasingly important in sustainable agricultural production, but their cultivation is often constrained by low and uneven seed germination. Physical presowing treatments, including laser irradiation, may provide an environmentally acceptable method for improving seed physiological performance. This study evaluated the effect of red laser irradiation on the germination of Dalmatian pyrethrum, yellow gentian, and common sage. Seeds were treated at 650 nm using three output powers 100, 200, and 500 mW and three exposure durations 30, 60, and 120 s while untreated seeds served as the control. Germination energy, final germination, time to half of final germination, and mean germination time were determined under controlled conditions. The response to laser irradiation was strongly species dependent. Common sage showed the clearest positive response, with germination energy increasing from 72.67% in the control to 84.67% under the 100/120 treatment, while final germination increased from 83.67% to 91.67%. Dalmatian pyrethrum showed only slight improvement, with final germination increasing from 7.50% to 12.50%. Yellow gentian showed almost no response, with the highest final germination of only 3.33%, indicating that laser irradiation alone was insufficient to overcome its pronounced dormancy-related limitations. Overall, the results indicate that laser irradiation may improve germination performance, particularly in common sage, but its effectiveness is strongly dependent on plant species and treatment parameters.

Ključne riječi

germination; laser treatment; Dalmatian pyrethrum; yellow gentian; common sage

Hrčak ID:

353096

URI

https://hrcak.srce.hr/353096

Datum izdavanja:

7.11.2026.

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