Abstract
Magnetic field biostimulation plays a significant role in enhancing the germination of seeds and increasing the metabolic rate. The low magnetic field effect for long exposure time and its effect on antioxidant profiling have not been studied. Therefore, in the recent findings, the static magnetic field’s impact on sunflower seeds subjected to the magnetic field at varying intensity (millitesla) for different exposure times was examined. The effectiveness of magnetic biostimulation on presown sunflower seeds, growth parameters of seedlings (biomass, root and shoot length, fresh and dry weight of roots, shoots, leaf, and height of plants), and antioxidant activities were also studied. It has been revealed that magnetic treatment at 50 mT/45 min greatly influenced the growth parameters, including mean germination growth (100 ± 0.02) and final emergence rate. Concerning the antioxidant parameters, seed variety FH620 at 500 µg/µL concentration showed significant results compared to other varieties. FTIR was employed to determine the conformational changes and functional groups of organic compounds from sunflower seedlings. Tocopherol analysis by HPLC showed that magnetic treatment at 50 mT/45 min had a higher concentration of vitamin E compared to the control group. These modifications indicated that magnetic field induction enhanced seeds’ inner energy that led to seedlings’ growth and development enhancement. Besides, magnetic field pretreatment has been shown to have a beneficial influence on sunflower seeds and their bioactive compounds. Future studies should be focused on growth characteristics at the field level and yield attributes.
Highlights
Presown magnetic biostimulation of sunflower seeds has a significant effect on germination parameters
Folin-Ciocalteu (FC) reagent, 1,1-dipheny l-2-picrylhydrazyl (DPPH), and trichloroacetic acid (TCA) were purchased from Merck (Darmstadt, Germany), whereas aluminum chloride, sodium carbonate, potassium ferrocyanide, and sodium hydroxide were purchased from Bio-Rad (USA), respectively
Magnetic Field Setup. e presowing magnetic treatment of seeds was carried out using an electromagnetic seed stimulator specially designed in the Department of Physics, University of Agriculture, Faisalabad, which was similar to Pietruszewski and Martınez’s [18] stimulator in construction. e seed stimulator consisted of two pairs of cylindrical shape coils, each of which consisted of 4000 turns that were coated with copper. e seeds were exposed to magnetic field treatment with various intensities (50, 80, and 100 mT) at different exposure times (45, 30, and 15 min), respectively
Summary
Presown magnetic biostimulation of sunflower seeds has a significant effect on germination parameters. Pakistan is chronically low in edible oil and invests a significant portion of its foreign exchange imports. E growth of sunflower planted in spring is reasonably slower compared to autumn crop, but the response to the agronomic parameters remains significant [10]. Magnetic field treatment significantly improves seed output in terms of germination velocity [15], seedling length [16], and seedling dry weight compared to unexposed seeds (control). It has been hypothesized that the magnetic field treatment would enhance the sunflower plant’s nutritional and pharmaceutical value. Erefore, the present study was conducted to evaluate the effect of magnetic field on presown hybrid seeds of sunflower to check the growth parameters of seedlings and antioxidant activities. The impact of treatment on the germination of sunflower seeds was explored
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