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. 2018 Sep 26;8:14372. doi: 10.1038/s41598-018-32692-9

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Water absorption measurements. Images of water drops on plasma-treated seeds (A) show the difference in the spreading of the water drops on the seeds for the control and a 27-min air plasma treated surface. Water-drop absorption times (B) and water-drop contact areas (C) were measured for control and plasma-treated cotton seeds. Error bars are the standard deviation from the mean. Student’s t-test calculation indicates statistically significant differences for *p < 0.1 and **p < 0.05, respectively. Air0 is control, Air3 is 3 min air, Air27 is 27 min air and Ar81 is 81 min argon.