The Effect of the Helium-Neon Laser Irradiation of Cucumber Seeds on the Physiological Characters of Plants Grown Under Water Stress Conditions

Cholakov, D.; Uzunov, N.; Meranzova, R.

doi:10.17660/actahortic.1997.462.122

Cited by 3 publications

(2 citation statements)

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“…In a similar study, cucumber seeds irradiated by He-Ne Laser increased the quantity of the photosynthetic product and the content of plastid pigments in leaves [71]. Suitable doses of laser irradiation improved germination capacity of plant seeds, enzymatic activities and the concentration of chlorophyll [72].…”

Section: Discussionmentioning

confidence: 99%

ZnO Nanofertilizer and He Ne Laser Irradiation for Promoting Growth and Yield of Sweet Basil Plant

El-Kereti¹,

Elfeky²,

Khater³

et al. 2014

FNA

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This study was conducted to evaluate the effectiveness of zinc nanofertilizer strategy on sweet basil yield, through alone application or combined with pre-sowing laser irradiation. Furthermore, evaluate the growth of plant and the level of active essential oil constituents. Zinc oxide (ZnO) nanoparticles (NPs) were synthesized, and transmission electron microscope revealed particle size of approximately 10.5-15.5 nm. ZnO NPs were applied to sweet basil plants by foliar spray at varying concentrations (10, 20 and 30 mg/L); He Ne laser of power 3mW was used for red light irradiation of sweet basil seeds for 2 min. exposure time. Total chlorophyll, total carbohydrate, essential oil levels, zinc content, plant height, branches/plant and fresh weight were measured. In general, the combined foliar spray application of ZnO nanofertilizer with pre-sowing He Ne laser irradiation showed more effectiveness than ZnO nanofertilizer alone and 20mg/L concentration gave the highest results of all measured traits. Statistical analysis (t-test) showed significant differences among the effects of the various concentrations of zinc oxide NPs on these attributes. The results showed an inverse relationship between the total carbohydrate content and the percentage of essential oil in the leaves. Together these findings support the usefulness and effectiveness of zinc oxide nanofertilizer and laser irradiation treatment to enhance the growth and yield of sweet basil plants. The article presents some promising patents on ZnO nanofertilizer and He Ne laser irradiation.

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Section: Discussionmentioning

confidence: 99%

ZnO Nanofertilizer and He Ne Laser Irradiation for Promoting Growth and Yield of Sweet Basil Plant

El-Kereti¹,

Elfeky²,

Khater³

et al. 2014

FNA

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“…Seed germination is a complex process controlled by two plant hormones such as Abscisic acid (ABA) and Gibberellic acid (GA). ABA sustains seed dormancy whereas seed germination is accelerated by GA 27 . During a favorable environment, the degradation of ABA and intensification of GA biosynthesis releases the dormancy in seeds 28 .…”

Section: Introductionmentioning

confidence: 99%

He–Ne laser accelerates seed germination by modulating growth hormones and reprogramming metabolism in brinjal

Swathy

Kiran

Joshi

et al. 2021

Sci Rep

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A plant’s ability to maximize seed germination, growth, and photosynthetic productivity depends on its aptitude to sense, evaluate, and respond to the quality, quantity, and direction of the light. Among diverse colors of light possessing different wavelengths and red light shown to have a high impact on the photosynthetic and growth responses of the plants. The use of artificial light sources where the quality, intensity, and duration of exposure can be controlled would be an efficient method to increase the efficiency of the crop plants. The coherent, collimated, and monochromatic properties of laser light sources enabled as biostimulator compared to the normal light. The present study was attempted to use the potential role of the He–Ne laser as a bio-stimulator device to improve the germination and growth of brinjal and to investigate the possible interactions of plant and laser photons. A substantial enhancement was observed in germination index, germination time and seed vigor index of laser-irradiated than control groups. The enhanced germination rate was correlated with higher GA content and its biosynthetic genes whereas decreased ABA content and its catabolic genes and GA/ABA ratio were noted in laser-irradiated groups during seed germination than control groups. Further the expression of phytochrome gene transcripts, PhyA and PhyB1 were upregulated in laser-irradiated seedlings which correlate with enhanced seed germination than control. Elevated levels of primary metabolites were noted in the early stages of germination whereas modulation of secondary metabolites was observed in later growth. Consequently, significantly increased photosynthetic rate, stomatal conductance, and transpiration rate was perceived in laser-irradiated seedlings compare with control. The current study showed hormone and phytochrome-mediated mechanisms of seed germination in laser-irradiated groups along with the enhanced photosynthetic rate, primary and secondary metabolites.

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Responses of He-Ne laser irradiation on agronomical characters and chlorogenic acid content of brinjal (Solanum melongena L.) var. Mattu Gulla

Swathy

Kiran

Rao

et al. 2016

Journal of Photochemistry and Photobiology B: Biology

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The Effect of the Helium-Neon Laser Irradiation of Cucumber Seeds on the Physiological Characters of Plants Grown Under Water Stress Conditions

Cited by 3 publications

References 0 publications

ZnO Nanofertilizer and He Ne Laser Irradiation for Promoting Growth and Yield of Sweet Basil Plant

ZnO Nanofertilizer and He Ne Laser Irradiation for Promoting Growth and Yield of Sweet Basil Plant

He–Ne laser accelerates seed germination by modulating growth hormones and reprogramming metabolism in brinjal

Responses of He-Ne laser irradiation on agronomical characters and chlorogenic acid content of brinjal (Solanum melongena L.) var. Mattu Gulla

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