Effect of Electromagnetic Stimulation of Amaranth Seeds of Different Initial Moisture on the Germination Parameters and Photosynthetic Pigments Content

Abstract

The influence of stimulation with He-Ne laser light, alternating magnetic field and the combination of these factors on germination parameters of amaranth seeds and on the chlorophyll and carotenoid content in seedlings was investigated. During the stimulation the amaranth seeds had a different initial moisture content. From the germination characteristics of the seeds as the function of humidity, three maxima and one minimum value of the germination parameters (the relative germination capacity NK REL, the relative maximum germination rate SK MAX REL and the maximum germination index WK MAX) were obtained. In the majority of cases, the extremities coincided with the changes in the chlorophyll and carotenoid content in the seedlings. The presented research is innovative in the field of seed biology since no similar studies have been conducted before. It is difficult to interpret the results referring to the literature on this subject. The results can be explained as follows: the observed effect must be related to the stages of the water uptake by the seeds. The three stages of the water uptake associated with the seed germination process coincide with the maximum values in the germination parameters and with the change in the photosynthetic pigment content in seedlings.

Influence of Magnetic Field with Schumann Resonance Frequencies on Photosynthetic Light Reactions in Wheat and Pea

“…There is a small amount of work devoted to the investigation of ELFMFs on photosynthesis and relating processes (see reviews [ 27 , 28 , 29 , 30 ]). Moreover, only few works show the influence of these MFs on photosynthesis in plant seedlings [ 36 , 39 ]; other works investigate the influence on photosynthetic parameters in plants after seed treatments by ELFMFs [ 35 , 37 , 38 ]. Our current work, which is devoted to the analysis of the influence of ELFMFs with 7.8, 14.3, and 20.8 Hz frequencies (the first, second and third Schumann resonance frequencies) on parameters of photosynthetic light reactions, shows the following points:…”

“…There are a number of works (see reviews [ 27 , 28 , 29 , 30 ]), which show the influence of ELFMFs on photosynthesis and related processes. In particular, treatment by ELFMF can change the content of chlorophylls and carotenoids [ 35 , 36 , 37 , 38 ], stimulate gene expression of ribulose 1,5-bisphosphate carboxylase/oxygenase small subunit [ 36 ], influence photosynthetic CO 2 assimilation and transpiration [ 36 , 38 , 39 ]. However, there are only few studies, which are devoted to investigation of the influence of ELFMFs on plant seedlings [ 36 , 39 ]; other works are devoted to the influence of these magnetic fields on seeds [ 35 , 37 , 38 ].…”

“…In particular, treatment by ELFMF can change the content of chlorophylls and carotenoids [ 35 , 36 , 37 , 38 ], stimulate gene expression of ribulose 1,5-bisphosphate carboxylase/oxygenase small subunit [ 36 ], influence photosynthetic CO 2 assimilation and transpiration [ 36 , 38 , 39 ]. However, there are only few studies, which are devoted to investigation of the influence of ELFMFs on plant seedlings [ 36 , 39 ]; other works are devoted to the influence of these magnetic fields on seeds [ 35 , 37 , 38 ]. Results of these works are rather contradictory: Yano et al [ 39 ] show that chronic action of ELFMFs can decrease photosynthetic CO 2 assimilation while the short-term action of these magnetic fields (2 h) does not influence the assimilation; in contrast, Alemán et al [ 36 ] show that short-term action of ELFMFs (3 min) both suppresses and stimulates net photosynthesis (the type of effect is dependent on the stage of development).…”

Comparative physiological and transcriptomic analysis of pear leaves under distinct training systems

“…Rapid qualitative adjustment in leaf photosynthetic apparatus and photosynthetic capacity can occur in response to short alterations in light availability 50 . As a major change, sun-exposed plants tends to increase the Chl a / b ratio 51 . This general finding was also confirmed in the current study, as a higher photosynthetic levels and Chl a / b ratio were observed in DP leaves with relatively higher irradiance (Figs.…”

Amaranthaceae plants of Israel and Palestine: Medicinal activities and unique compounds

“…414 Kornarzynski and his colleagues reported growth promotion of this plant by electromagnetic stimulation to enhance the production of pigments (chlorophylls and carotenoids) in leaves. 415 Hlinkova and her colleagues grew this plant for two consecutive years and discovered high content of fatty acids (seeds) with notable unsaturation index (UI). 416 As we mentioned earlier, Amaranthus palmeri also has not been investigated much.…”