Effect of laser irradiation on microviscosity of aqueous medium in imbibing maize seeds as studied with a spin probe method

Samuilov, F. D.; Garifullina, R. L.

doi:10.1134/s1021443707010190

Cited by 10 publications

(9 citation statements)

References 3 publications

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“…The effect of various lasers on plant growth has recently received increased attention and has elicited some preliminary studies ( Joshi, Joshi & Agrawal, 2012 ; Samuilov & Garifullina, 2007 ; Tang et al, 2019 ). Notably, most previous studies did not consider the analysis of the positive restorative effects of He–Ne laser treatment on plant photosynthesis.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the effects of two laser photobiomodulation techniques on bio-physical properties of Zea mays L. seeds

Hasan

Hanafiah

Al-Hilfy

et al. 2021

PeerJ

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Background Laser applications in agriculture have recently gained much interest due to improved plant characteristics following laser treatment before the sowing of seeds. In this study, maize seeds were exposed to different levels of laser treatment prior to sowing to improve their field performance. The aim of this study is to evaluate the impact of pre-sowing laser photobiomodulation on the field emergence and growth of treated maize seeds. Methods The maize seeds were first photobiomodulated with two lasers: 1) a helium-neon (He–Ne) red laser (632.8 nm), and 2) a neodymium-doped yttrium aluminum garnet (Nd:YAG) green laser (532 nm). Following three replications of randomized complete block design (RCBD), four irradiation treatments were applied (45 s, 65 s, 85 s, and 105 s) at two power intensities (2 mW/cm2 and 4 mW/cm2). Results Based on the results, maize seeds pretreated with a green laser and 2 mW/cm2 power intensity for 105 s exhibited the highest rate of seed emergence (96%) compared to the untreated control seeds with a lower seed emergence rate (62.5%). Furthermore, maize seeds treated with a red laser for 45 s showed an increased vigor index compared to the other treatment options and the control (P < 0.01). The treatment groups also showed statistically significant differences in seedling growth characteristics compared to the control group p < 0.01. The green laser produced a significant enhancement of about 24.20 cm in seedling length, 8.2 leaves/plant, and 3.4 cm in stem diameter compared to the untreated seeds. Moreover, the green laser treatment showed 57.4 days to anthesis, which was earlier than the untreated seeds (61.4 days). The results showed that the protein, oil, and starch contents of the seeds irradiated with the green laser were 17.54%, 6.18%, and 73.32%, respectively, compared to the seeds irradiated by the red laser with 16.51%, 6.33%, and 71.05%, respectively. Conclusions The photo biomodulation of maize seeds using a green laser light can improve the field emergence, seedling growth, and seed quality of the treated seed compared to the red laser treatment.

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Section: Discussionmentioning

confidence: 99%

Comparison of the effects of two laser photobiomodulation techniques on bio-physical properties of Zea mays L. seeds

Hasan

Hanafiah

Al-Hilfy

et al. 2021

PeerJ

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“…So, the seeds which pretreated with laser were notably higher in enthalpy change (DH) and have to absorb more energy from the surrounding than that of the control during the germination process because laser broke the kinetic equilibrium of germination seeds and enhanced the internal energ y of seeds. Consequently, the biochemistry and physiology metabolisms of the seeds pretreated with laser were accelerated (Han et al, 2002;Rubinov, 2003;Salyaev et al, 2003;Chen et al, 2005a,b;2005b;Samuilov and Garifullina, 2007;Wu et al, 2007).…”

Section: Germination Indices the Data Presented Inmentioning

confidence: 99%

Effects of Laser Biostimulation on Germination of Acacia Farnesiana (L.) Willd.

Soliman¹,

Harith²

2010

Acta Hortic.

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Acacia farnesiana (L.) Willd. is a very important multipurpose species in Egypt and many other countries. It is valued as forestry and as an ornamental tree. Its flowers produce a perfume called " cassie " extensively used in European perfumery. The present study aims to the determination of the effect of helium-Neon (He-Ne) light irradiation on accelerating the germination of A. farnesiana seeds, which have dormancy due to impermeability of seed coat of water. The seeds were exposed to He-Ne laser light for 1, 3, 5, 7, and 9 minutes with different irradiance 0.03, 0.20, 0.61, 1.14, and 1.70 W/cm 2. Gibberellic acid (GA), indole-acetic acid (IAA), abscisic acid (ABA) as well as phenols were determined after 48h in treated and untreated seeds. Thin sections in the testa were also made. Germination indices: the time to germinate, germination period, germination percentage and germination speed were determined. The results showed that irradiation by the laser beam of the seed coat, (testa or pericarp, the envelope enclosing the seed embryo), succeeded in perforating the seed coat at one or more positions. Generally, an increase in irradiance and exposure time of He-Ne laser light irradiation increased levels of endogenous promoting substances (GA and IAA), and decreased levels of endogenous inhibiting substances (ABA and phenol) in seed coats. We conclude that irradiance of seeds with He-Ne laser light at 1.70 W/cm 2 for 9 min. significantly affected germination indices when compared with control seeds.

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“…Therefore, some studies are currently being conducted with various methods for seed improvement (Florez et al 2007;Khawar et al 2010;Marinkoviae et al 2008;Perveen et al 2011;Zia et al 2012). Recently, more attention has been paid to physical factors, which may be used in the process of seed preparation (Delibatlova and Ivanova 2006;Hernandez et al 2010;Gładyszewska 2011;Govindaraj et al 2017;Samuilov and Garifullina 2007;Szajsner et al 2017). The prevailing view is that physical factors stimulating seeds to germinate act only on the course of physiological and biochemical processes which occur in them, and therefore, they are safe for the environment (Govindaraj et al 2017;Jamil et al 2012;Podleśny 1998;Podleśny et al 2003Podleśny et al , 2004.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pre-sowing Magnetic Field Treatment on Some Biochemical and Physiological Processes in Faba Bean (Vicia faba L. spp. Minor)

Podleśna

Bojarszczuk

Podleśny

2019

J Plant Growth Regul

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The aim of this paper was to determine the changes in some biochemical and physiological processes, which occurred in seeds and seedlings of faba bean and to evaluate the germination dynamics and plant emergence after pre-sowing seeds treatment with a magnetic field. The study was carried out on Petri dishes in climatic chambers of the company HERAEUS (Germany). Each plate was lined with filter paper and 80 seeds of faba bean were sown. The paper was sprayed with the same amount of distilled water in each plate. Treatment of seeds significantly increased the activity of amylolytic enzymes in faba bean seeds and seedlings. The greatest differentiation in enzymatic activity between stimulated and nontreated seeds was noted after 96 h from the time of sowing. Seeds treated with the magnetic field showed greater dynamics of weight at the time of imbibition than nontreated seeds. Treating of seeds with a magnetic field considerably increased the amount of indole-3-acetic acid and gibberellic acid in germinating seeds, above-ground parts and in roots of faba bean seedlings. The pre-sowing treatment with a magnetic field had favorable effects on the growth and development of seedlings.

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Effect of laser irradiation on microviscosity of aqueous medium in imbibing maize seeds as studied with a spin probe method

Cited by 10 publications

References 3 publications

Comparison of the effects of two laser photobiomodulation techniques on bio-physical properties of Zea mays L. seeds

Comparison of the effects of two laser photobiomodulation techniques on bio-physical properties of Zea mays L. seeds

Effects of Laser Biostimulation on Germination of Acacia Farnesiana (L.) Willd.

Effect of Pre-sowing Magnetic Field Treatment on Some Biochemical and Physiological Processes in Faba Bean (Vicia faba L. spp. Minor)

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