Seed germination of medicinal sage is affected by gibberellic acid, magnetic field and laser irradiation

Abstract

Proper priming techniques are among the most important methods for increasing seed germination and seedling growth. Three experiments were conducted to investigate the effects of plant hormone (500 and 1000 mg/L gibberellic acid (GA)), magnetic field (3, 15, 30 mili Tesla (mT)) and laser irradiation at 650 nm (200 mW) on the germination and the growth of Salvia officinalis. We examined the plumule and radical length, plumule and radical fresh weight, plumule and radical dry weight, germination percentage, germination rate and seed vigor. The two concentrations of GA significantly increased seed germination and seedling growth. The magnetic field at 15 mT significantly increased radical length. The effect of laser irradiation was also significant on plumule length, and fresh and dry weight, radicle fresh weight, germination percentage and rate and seed vigor. Such results may be of practical use in the field, especially in arid and semiarid areas, but more research must determine the response of medicinal sage, treated with the priming techniques tested in our experiments, under stress conditions.

Magnetic field treatment on horticultural and agricultural crops: its benefits and challenges

“…However, there are also reports on some cases when application of MF on seeds was not successful or repeatable. For some crops, only in certain range(s) of the MF intensity and exposure time have caused the positive effects (Araújo et al, 2016;Farooq et al, 2019;Rifina et al, 2019;Sarraf et al, 2020;), while the other ranges have given weakened or even negative effects (Abdani Nasiri et al, 2018;Nair et al, 2018;Florez et al, 2019;Khaledi et al, 2019;Massah et al, 2019;Migahid et al, 2019;Júnior et al, 2020;Afzal et al, 2021). Due to the complexity of the interaction between the used MF and plants, the research of the mechanism is still in the exploration stage and needs further study (Radhakrishnan, 2019).…”

“…In an experiment of MF effects on Salvia officinalis seeds, it was reported that the treated (15 mT, 5 min) seeds gave longer and heavier (fresh weight) radicles than the control ones. They reached 50.46 mm and 0.11 g, respectively (Abdani Nasiri et al, 2018).…”

Sustainable laser technology for the control of organisms and microorganisms in agri-food systems: a review

“…Likewise, they have also focused on bioremediation problems as a single treatment (Romero-Galindo et al, 2021) or in a hybrid way, i.e. a combination of treatments (Dziwulska-Hunek et al, 2009;Asghar et al, 2016;Abdani et al, 2018) which are a trend in the application of biophysical methods for bio-stimulation purposes (Hernández-Aguilar et al, 2023). The use of agrochemicals must be avoided, farmers often use them to solve problems in the production system as they guarantee increased production levels and reduce losses, however, they do not provide a viable pathway toward sustainability.…”

Influence of Electromagnetic Stimulation of Seeds on the Photosynthetic Indicators in Medicago sativa L. Leaves at Various Stages of Development

“…Literature reports mention improvement in terms of germination efficiency and seed mass under the influence of laser light stimulation in certain plants, e.g., plums [41], sprouting rate and yields in alfalfa [42], protein, phosphorus, and molybdenum content in alfalfa dry mass, as well as reduced content of raw fiber in the plants [43]. Sujak et al [44] observed both a positive and negative impact of electromagnetic stimulation on the germination of alfalfa and lupine under laboratory conditions.…”