Influence of Electromagnetic Stimulation of Seeds on the Photosynthetic Indicators in <i>Medicago sativa</i> L. Leaves at Various Stages of Development
The paper explores the impact of electromagnetic stimulation of Ulstar alfalfa seeds on fresh mass yield, the quantum efficiency of the plants’ photochemical reactions, and the content of photosynthetic pigments in leaves. Before sowing, seeds were subjected to electromagnetic stimulation in the fol...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/10/4/594 |
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| author | Agata Dziwulska-Hunek Agnieszka Kornarzyńska-Gregorowicz Agnieszka Niemczynowicz Arkadiusz Matwijczuk |
| author_facet | Agata Dziwulska-Hunek Agnieszka Kornarzyńska-Gregorowicz Agnieszka Niemczynowicz Arkadiusz Matwijczuk |
| author_sort | Agata Dziwulska-Hunek |
| collection | DOAJ |
| description | The paper explores the impact of electromagnetic stimulation of Ulstar alfalfa seeds on fresh mass yield, the quantum efficiency of the plants’ photochemical reactions, and the content of photosynthetic pigments in leaves. Before sowing, seeds were subjected to electromagnetic stimulation in the following configurations: control (C), no stimulation; stimulation with He–Ne laser light with the wavelength of 632.8 nm, surface power density of 3 mW·cm<sup>−2</sup> and exposition time of 1 min (L1) or 5 min (L5); stimulation with alternating magnetic field with the induction of 30 mT and exposition time of 1 min (F1) or 5 min (F5). It was established that the variability of alfalfa yields at the onset of anthesis was dependent on weather conditions as well as, above all, on the electromagnetic stimulation employed. At the same time, the values of fresh mass yield of alfalfa and photosynthetic efficiency were higher in the first year of cultivation (2014) compared to the last year (2016). In terms of photosynthetic efficiency, the best results were observed for L1 and F5, respectively: 0.801 and 0.800. The significantly highest values in terms of chlorophyll <i>a</i> and <i>b</i> and carotenoid content were observed in 2014 at the onset of budding in the combination involving alternating magnetic field stimulation (F5), and were, respectively, 30%, 28% and 73% relative to the control. |
| first_indexed | 2024-03-10T20:18:05Z |
| format | Article |
| id | doaj.art-26672c998a224187be5c4415f75a0911 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T20:18:05Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-26672c998a224187be5c4415f75a09112023-11-19T22:21:24ZengMDPI AGAgronomy2073-43952020-04-0110459410.3390/agronomy10040594Influence of Electromagnetic Stimulation of Seeds on the Photosynthetic Indicators in <i>Medicago sativa</i> L. Leaves at Various Stages of DevelopmentAgata Dziwulska-Hunek0Agnieszka Kornarzyńska-Gregorowicz1Agnieszka Niemczynowicz2Arkadiusz Matwijczuk3Department of Biophysics, University of Life Sciences, Akademicka 13, 20-950 Lublin, PolandDepartment of Biophysics, University of Life Sciences, Akademicka 13, 20-950 Lublin, PolandDepartment of Analysis and Differential Equations, University of Warmia and Mazury in Olsztyn, Słoneczna 54, PL-10-710 Olsztyn, PolandDepartment of Biophysics, University of Life Sciences, Akademicka 13, 20-950 Lublin, PolandThe paper explores the impact of electromagnetic stimulation of Ulstar alfalfa seeds on fresh mass yield, the quantum efficiency of the plants’ photochemical reactions, and the content of photosynthetic pigments in leaves. Before sowing, seeds were subjected to electromagnetic stimulation in the following configurations: control (C), no stimulation; stimulation with He–Ne laser light with the wavelength of 632.8 nm, surface power density of 3 mW·cm<sup>−2</sup> and exposition time of 1 min (L1) or 5 min (L5); stimulation with alternating magnetic field with the induction of 30 mT and exposition time of 1 min (F1) or 5 min (F5). It was established that the variability of alfalfa yields at the onset of anthesis was dependent on weather conditions as well as, above all, on the electromagnetic stimulation employed. At the same time, the values of fresh mass yield of alfalfa and photosynthetic efficiency were higher in the first year of cultivation (2014) compared to the last year (2016). In terms of photosynthetic efficiency, the best results were observed for L1 and F5, respectively: 0.801 and 0.800. The significantly highest values in terms of chlorophyll <i>a</i> and <i>b</i> and carotenoid content were observed in 2014 at the onset of budding in the combination involving alternating magnetic field stimulation (F5), and were, respectively, 30%, 28% and 73% relative to the control.https://www.mdpi.com/2073-4395/10/4/594alfalfa seedselectromagnetic stimulationfresh mass yieldquantum efficiency of photosynthesisphotosynthetic pigments |
| spellingShingle | Agata Dziwulska-Hunek Agnieszka Kornarzyńska-Gregorowicz Agnieszka Niemczynowicz Arkadiusz Matwijczuk Influence of Electromagnetic Stimulation of Seeds on the Photosynthetic Indicators in <i>Medicago sativa</i> L. Leaves at Various Stages of Development Agronomy alfalfa seeds electromagnetic stimulation fresh mass yield quantum efficiency of photosynthesis photosynthetic pigments |
| title | Influence of Electromagnetic Stimulation of Seeds on the Photosynthetic Indicators in <i>Medicago sativa</i> L. Leaves at Various Stages of Development |
| title_full | Influence of Electromagnetic Stimulation of Seeds on the Photosynthetic Indicators in <i>Medicago sativa</i> L. Leaves at Various Stages of Development |
| title_fullStr | Influence of Electromagnetic Stimulation of Seeds on the Photosynthetic Indicators in <i>Medicago sativa</i> L. Leaves at Various Stages of Development |
| title_full_unstemmed | Influence of Electromagnetic Stimulation of Seeds on the Photosynthetic Indicators in <i>Medicago sativa</i> L. Leaves at Various Stages of Development |
| title_short | Influence of Electromagnetic Stimulation of Seeds on the Photosynthetic Indicators in <i>Medicago sativa</i> L. Leaves at Various Stages of Development |
| title_sort | influence of electromagnetic stimulation of seeds on the photosynthetic indicators in i medicago sativa i l leaves at various stages of development |
| topic | alfalfa seeds electromagnetic stimulation fresh mass yield quantum efficiency of photosynthesis photosynthetic pigments |
| url | https://www.mdpi.com/2073-4395/10/4/594 |
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