Перегляд за Автор "Prysedskyi, Yurii"

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  • Ескіз недоступний
    Документ
    Effect of Laser Irradiation of Seeds on Growth Parameters Of Dracocephalum moldavica L.
    (New Delhi, India: Bharati Vidyapeeth College of Pharmacy, Kolhapur, Maharashtra, 2021) Prysedskyi, Yurii; Kozlova, Maria
    The work analyzes the effect of laser irradiation on the similarity and growth indicators of the serpentine. The effect of laser irradiation of seeds with red and blue light on the growth parameters of Dracocephalum moldavica L. has been determined. The experiments used LED lasers characterized by coherent monochromatic radiation of red (635 nM) and blue (405 nM) light with a radiation capacity of 100 mW. As a result of the research, it was found that laser irradiation of seeds increased germination depending on the regime by 18.1-36.4 % compared to non-irradiated seeds. In 1.7-3.4 rad increased the number of plants that survived in experimental variants compared to control. Plants grown from irradiated seeds were characterized by accelerated by 51.08-88.29% growth of root sittings and increased content of chlorophyll a and chlorophyll b. Irradiation of seeds by a blue laser with an energy of 25.05 mJ/cm2 and coьplex irradiation by red rays with energy of 51.10 mJ/cm2 and blue rays with energy of 25.05 mJ/cm2 caused an increase in chlorophyll a by 135.7-1328.5 % and chlorophyll b by 84.7-14.8 % compared to control. This may indicate a significant activation of light receptor systems of the studied species.
  • Ескіз недоступний
    Документ
    Plant growth parameters of Cucumis sativus L. сv Cornish Paris changes under the conditions of seeds irradiation with LED lasers.
    (Lviv: Bogdan Gutyj (Богдан Гутий) Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies, 2021) Prysedskyi, Yurii; Pendelia, Yana
    The problems of increasing plant productivity are among the leading at the present stage of human development. Most often, chemicals are used to achieve this goal, which leads to a deterioration in the environmental situation. An alternative is the use of physical means, in particular the use of laser systems to stimulate plants. One of the most promising areas is the use of LED lasers, which at the same radiation power have smaller dimensions and use much less energy than He-Ne or other lasers. The results of studies of the influence of seed irradiation Cucumis sativus L. are presented in the paper. cv Cornish Paris LED lasers emitted red (wavelength 635 nm) and blue (wavelength 405 nm) light. Irradiation was carried out according to the scheme of a complete factor experiment, which made it possible to detect the action of each of the light sources and their complex action. Determination of growth parameters was carried out using standard methods. The area of the leaves was determined after scanning them on a tablet scanner. The results showed a significant positive effect of irradiation of seeds on the growth processes of experimental plants. Irradiation with red light with an energy of 51.10 mJ/cm2 and complex irradiation improved oral parameters such as root length by 25.0-42.5%, shoot height by 19.4-77.4% compared to plants grown from non-irradiated seeds. In experimental plants, the leaf area increased significantly and by 22.4-41.5% the total leaf area grew. Studies have also revealed a significant positive effect of seed irradiation on the plant pigment complex. In plants grown from irradiated seeds, the content of chlorophyll A is 25.5-30.9%, and chlorophyll B is 754.0-105.5% higher than in control plants. The ratio of chlorophyll A to chlorophyll B under these conditions was not likely to change. Studies have shown the prospects of using laser irradiation using LED laser systems to improve the growth, development and productivity of agricultural plants.