Changes in the Properties and Surface Structure of Grain Seeds under the Influence of a Glow Dischargeat Atmospheric Pressure

Балданов, Б. Б.; Ranzhurov, Ts. V.; Sordonova, M. N.; Будажапов, Л. В.

doi:10.1134/s1063780x2001002x

Cited by 15 publications

(5 citation statements)

References 18 publications

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“…As explained above, these rather marginal effects are probably due to the low power absorbed by ICP in the E-mode. As etching intensifies with increased treatment power [43], our H-mode plasma treatment causes extensive etching even though the beans are kept at a floating potential, and thus, the ion bombardment is negligible as compared to other effects. On the other hand, exposure to an oxygen DBD caused alterations to the seed coat and cotyledon surfaces, as observed by SEM at rather low magnifications [14].…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Germination of Phaseolus vulgaris L. Seeds after a Short Treatment with a Powerful RF Plasma

Recek

Holc

Vesel

et al. 2021

IJMS

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Seeds of common bean (Phaseolus vulgaris L.), of the Etna variety, were treated with low-pressure oxygen plasma sustained by an inductively coupled radiofrequency discharge in the H-mode for a few seconds. The high-intensity treatment improved seed health in regard to fungal contamination. Additionally, it increased the wettability of the bean seeds by altering surface chemistry, as established by X-ray photoelectron spectroscopy, and increasing surface roughness, as seen with a scanning electron microscope. The water contact angle at the seed surface dropped to immeasurably low values after a second of plasma treatment. Hydrophobic recovery within a month returned those values to no more than half of the original water contact angle, even for beans treated for the shortest time (0.5 s). Increased wettability resulted in accelerated water uptake. The treatment increased the bean radicle length, which is useful for seedling establishment in the field. These findings confirm that even a brief plasma treatment is a useful technique for the disinfection and stimulation of radicle growth. The technique is scalable to large systems due to the short treatment times.

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Section: Scanning Electron Microscopymentioning

confidence: 99%

Germination of Phaseolus vulgaris L. Seeds after a Short Treatment with a Powerful RF Plasma

Recek

Holc

Vesel

et al. 2021

IJMS

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“…Further, extensive functionalization can remove material from the sample surface by the process of chemical etching [35]. The etching of the surface typically increases with increased treatment time and generator power, as was seen in wheat seeds treated with a glow discharge in argon [11]. The extent of etching seen in Figure 4 is moderate but evident.…”

Section: Scanning Electron Microscopymentioning

confidence: 96%

“…Etching of the wheat seed surface was seen after low-pressure capacitively coupled (CC) radio frequency (RF) air plasma treatment [7], medium-pressure glow discharge treatment [8,9], as well as dielectric barrier discharge (DBD) treatment using various gases at atmospheric pressure [10]. By using a glow discharge in argon, the etching of the surface was found to increase with increased treatment time and input power [11]. Further, in an inductively coupled (IC) RF plasma system, etching depended on the direct or indirect nature of treatment; nanostructuring was only seen following glow, but not afterglow, plasma treatment [12].…”

Section: Introductionmentioning

confidence: 99%

“…The modified physicochemical properties of the wheat seed surface affect its wettability. A decreased water contact angle (WCA) was measured after a variety of plasma treatments, including DBDs [14,15,19,20], a glow discharge in argon [11], and an IC RF discharge [16]. One group used ethylene glycol and diiodomethane contact angles to further assess the hydrophilicity of the wheat seed's surface [20].…”

Section: Introductionmentioning

confidence: 99%

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Surface Modifications of Wheat Cultivar Bologna upon Treatment with Non-Equilibrium Gaseous Plasma

Holc

Vesel

Zaplotnik

et al. 2022

Plants

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Seeds of wheat cultivar Bologna were treated with a low-pressure, inductively coupled, radio frequency oxygen plasma. E-mode and H-mode plasma at the real powers of 25 and 275 W, respectively, was used at treatment times of 0.1–300 s. Plasma affected seed surface chemistry, determined by XPS, and surface topography, visualized by SEM. The combined effects of functionalization and etching modified seed surface wettability. The water contact angle (WCA) exponentially decreased with treatment time and correlated with the product of discharge power and treatment time well. Super-hydrophilicity was seen at a few 1000 Ws, and the necessary condition was over 35 at.% of surface oxygen. Wettability also correlated well with O-atom dose, where super-hydrophilicity was seen at 1024–1025 m−2. A relatively high germination percentage was seen, up to 1000 Ws (O-atom dose 1023–1024 m−2), while seed viability remained unaffected only up to about 100 Ws. Extensively long treatments decreased germination percentage and viability.

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“…In recent domestic and foreign literature, it is proposed to use the method of plasma modification (treatment) of both the seed surface and the use of plasma-activated water before sowing to solve this problem. The authors obtained positive results on some cereals, legumes, oilseeds, melons, tubers, as well as on three forest woody plants from the genera: Pinus L., Betula L. and Acer L. [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effect of water treated with low-temperature plasma on the formation of seedlings and sprouts of vegetables

Lubin,

Yakushin,

Abizov

et al. 2023

BIO Web Conf.

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The article presents a study of the effect of plasma-activated water (PAW) on the development of seedlings from carrot and radish seeds, as well as forcing of garlic with its subsequent growth during its vegetative reproduction. The results of the experiment were obtained by a comparative analysis of the parameters of the development of crops and plantings, watering of which was carried out with treated, as well as not treated with low-temperature plasma water. During the germination of carrot and radish seeds, as well as forcing of garlic bulbs from the cloves, the positive effect of plasma-treated water was established. The germination numbers of carrot and radish seeds increased by an average of 18-20%, and the germination of garlic cloves by 20 ± 5%. Based on the results obtained, it was concluded that the PAW treatment of the planting material of root and bulbous vegetable crops contributes to the acceleration of certain physiological processes (removal from the latent stage of seeds and the beginning of bulb vegetation), as well as, possibly, to the acceleration of mitotic processes of the apical meristems of the studied plants. This work can form the basis of a fundamentally new eco-friendly, as well as cost-effective approach in the cultivation of food, medicinal and other industrially significant plants.

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Changes in the Properties and Surface Structure of Grain Seeds under the Influence of a Glow Dischargeat Atmospheric Pressure

Cited by 15 publications

References 18 publications

Germination of Phaseolus vulgaris L. Seeds after a Short Treatment with a Powerful RF Plasma

Germination of Phaseolus vulgaris L. Seeds after a Short Treatment with a Powerful RF Plasma

Surface Modifications of Wheat Cultivar Bologna upon Treatment with Non-Equilibrium Gaseous Plasma

Investigation of the effect of water treated with low-temperature plasma on the formation of seedlings and sprouts of vegetables

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