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Cold radiofrequency plasma treatment modifies wettability and germination speed of plant seeds.

Bormashenko E, Grynyov R, Bormashenko Y, Drori E - Sci Rep (2012)

Bottom Line: We report the possibility to modify the wetting properties of the surfaces of a diversity of seeds including: lentils (Lens culinaris), beans (Phaseolus vulgaris) and wheat (Triticum, species C9) by cold radiofrequency air plasma treatment.Air plasma treatment leads to the dramatic decrease in the apparent contact angle.Significant growth of the peaks corresponding to the nitrogen containing groups in the mass spectra of air plasma treated seeds was registered by TOF-SIMS spectroscopy.

View Article: PubMed Central - PubMed

Affiliation: Ariel University Center of Samaria, Physics Faculty, Ariel, Israel. edward@ariel.ac.il

ABSTRACT
We report the possibility to modify the wetting properties of the surfaces of a diversity of seeds including: lentils (Lens culinaris), beans (Phaseolus vulgaris) and wheat (Triticum, species C9) by cold radiofrequency air plasma treatment. Air plasma treatment leads to the dramatic decrease in the apparent contact angle. Moreover, the speed of germination and yield (germination rate) of seeds can be modified by preliminary plasma treatment. The change in the wetting properties of seeds is at least partially due to oxidation of their surface under plasma treatment. Significant growth of the peaks corresponding to the nitrogen containing groups in the mass spectra of air plasma treated seeds was registered by TOF-SIMS spectroscopy.

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The time dependence of water absorption (imbibition) by irradiated and non-irradiated (a) beans, (b) lentil seeds, (c) wheat grains.
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f6: The time dependence of water absorption (imbibition) by irradiated and non-irradiated (a) beans, (b) lentil seeds, (c) wheat grains.

Mentions: The change in the wettability of beans and lentils gave rise to a change in the water absorption (imbibition) of these seeds, presented by Figure 6a–b. These graphs demonstrate the time dependence of the average water absorption normalized by the initial masses of seeds. This change is very pronounced for lentils during the first two hours of the experiment; however, the saturation line for both the irradiated and the non-irradiated lentils is the same. For beans, the difference between the irradiated and non-irradiated seeds is noticeable throughout entire time span of the experiment. For wheat grains, only a slight (but resolvable within the accuracy of the experiment) increase of water imbibition was observed during 240–300 min of the experiment, as shown in Figure 6c.


Cold radiofrequency plasma treatment modifies wettability and germination speed of plant seeds.

Bormashenko E, Grynyov R, Bormashenko Y, Drori E - Sci Rep (2012)

The time dependence of water absorption (imbibition) by irradiated and non-irradiated (a) beans, (b) lentil seeds, (c) wheat grains.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3473364&req=5

f6: The time dependence of water absorption (imbibition) by irradiated and non-irradiated (a) beans, (b) lentil seeds, (c) wheat grains.
Mentions: The change in the wettability of beans and lentils gave rise to a change in the water absorption (imbibition) of these seeds, presented by Figure 6a–b. These graphs demonstrate the time dependence of the average water absorption normalized by the initial masses of seeds. This change is very pronounced for lentils during the first two hours of the experiment; however, the saturation line for both the irradiated and the non-irradiated lentils is the same. For beans, the difference between the irradiated and non-irradiated seeds is noticeable throughout entire time span of the experiment. For wheat grains, only a slight (but resolvable within the accuracy of the experiment) increase of water imbibition was observed during 240–300 min of the experiment, as shown in Figure 6c.

Bottom Line: We report the possibility to modify the wetting properties of the surfaces of a diversity of seeds including: lentils (Lens culinaris), beans (Phaseolus vulgaris) and wheat (Triticum, species C9) by cold radiofrequency air plasma treatment.Air plasma treatment leads to the dramatic decrease in the apparent contact angle.Significant growth of the peaks corresponding to the nitrogen containing groups in the mass spectra of air plasma treated seeds was registered by TOF-SIMS spectroscopy.

View Article: PubMed Central - PubMed

Affiliation: Ariel University Center of Samaria, Physics Faculty, Ariel, Israel. edward@ariel.ac.il

ABSTRACT
We report the possibility to modify the wetting properties of the surfaces of a diversity of seeds including: lentils (Lens culinaris), beans (Phaseolus vulgaris) and wheat (Triticum, species C9) by cold radiofrequency air plasma treatment. Air plasma treatment leads to the dramatic decrease in the apparent contact angle. Moreover, the speed of germination and yield (germination rate) of seeds can be modified by preliminary plasma treatment. The change in the wetting properties of seeds is at least partially due to oxidation of their surface under plasma treatment. Significant growth of the peaks corresponding to the nitrogen containing groups in the mass spectra of air plasma treated seeds was registered by TOF-SIMS spectroscopy.

Show MeSH
Related in: MedlinePlus