The Influence of Laser Beam and Auxins on Rooting of Leatherleaf Viburnum (<i>VIBURNUM RHYTIDOPHYIIUM</i> Hemsl.) Cuttings

Szajsner, Hanna; Bąbelewski, P.

doi:10.2478/johr-2014-0007

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…There are several reports in the literature about the use of laser light (630 nm to 660 nm) to produce stimulation effects, when used as a pre-sowing treatment for short periods of time, on agricultural seeds [1][2][3][4][5][6]. Numerous studies in the world have evidenced the possibility of improving the physiological quality, seed vigor, germination, seed health quality, as well as accelerating the maturity of plants to help achieve higher productivity, increase the resistance of plants to disease, and reduction of contamination from soil and water with agrochemicals [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Thermal Changes of Maize Seed by Laser Irradiation

2015

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In this research, the thermal evolution in maize seeds (Zea mays L.) was studied when low-intensity laser irradiation was applied during 60 s. The seeds were irradiated in three different conditions: suspended in air, placed on an aluminum surface, and finally placed on a cardboard; the evolution of the seed temperature was measured by an infrared camera. Photoacoustic spectroscopy and the Rosencwaig and Gersho model were used to determine the optical absorption coefficient (β) of the seeds. The results indicate that using 650 nm laser light and 27.4 mW, it is possible to produce temperature changes (up to 9.06 • C after 1 min) on the seeds. Comparing the mean temperature of the seeds, during and after the incidence of light from a laser, it was found that there were statistically significant differences (P ≤ 0.05) from time t 1 to time t 16 (t 1 to t 16 ) and t 3 to t 16 , for the laser turned on and off, respectively. The seed condition that had the highest temperature variation, relative to the initial temperature (during the irradiation laser exposure), involved the seeds suspended in air. With regard to the stage of decay of the temperature, it was found that the seed condition that decays more slowly was the seed placed on the cardboard. It was also found that black-dyed maize seeds are optically opaque in the 300 nm to 700 nm range Also, the thermal diffusion length is smaller than the optical penetration length. In the present investigation, it was shown that there is a thermal component associated with the mechanisms of laser biostimulation, which is also a function of the container materials of the seed. In this way, the effects of laser treatment on maize seeds involve at least a temperature effect. It is important to know the temperature changes in the seeds that have been irradiated with a laser beam since they could have substantial practical and theoretical importance.

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Section: Introductionmentioning

confidence: 99%

Thermal Changes of Maize Seed by Laser Irradiation

2015

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In vitro laser radiation induces mutation and growth in Eustoma grandiflorum plant

et al. 2019

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Background: Eustoma grandiflorum is a new floral crop for the international flowers market, moderately coldtolerant annual or biennial plant. A large number of seedlings can be produced by seed propagation but the quality is not uniform due to variations in the flowering time, plant height, and the number of flowers. Propagation of Eustoma grandiflorum plant by tissue culture technique is relatively low. Inducing mutations is one of the powerful tools for breeding biotechnology. Laser mutagenesis is an easy and new tool. The goal of the present work was to investigate the influence of laser irradiation on in vitro growth, anatomy, flowering, chemicals composition, and gene mutagenesis. Results: The most of morphological, floral parameters, total chlorophyll, carotenoids, and anthocyanin pigment contents in the flower recorded increment by most treatments of laser types. The highest survival percentage of acclimatized plants (95%) and highest values of number of branches and branches length (cm) were obtained from treated plantlets by 20 min of green laser, while most of highest floral parameters, anthocyanin pigment contents in flower, and anatomical structural parameters recorded increasing using 20 min of blue laser and 20, 25 min of green and red laser, respectively. Contrary, the lowest values of photosynthetic pigments and carotenoids were obtained from 20 min of green laser. Conclusions: The current research concluded that laser irradiation has remarkable effect on plant morphology, flowering, chemical constituents, and gene mutagenesis.

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The Influence of Laser Beam and Auxins on Rooting of Leatherleaf Viburnum (VIBURNUM RHYTIDOPHYIIUM Hemsl.) Cuttings

Cited by 2 publications

References 3 publications

Thermal Changes of Maize Seed by Laser Irradiation

Thermal Changes of Maize Seed by Laser Irradiation

In vitro laser radiation induces mutation and growth in Eustoma grandiflorum plant

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