The paper presents the results of an experiment on the effect of cold plasma (He + O 2 and He + Air) generated in a radio frequency cold atmospheric plasma jet on the process of germination of onion cv. Wolska ( Allium cepa L.) seeds. In order to determine the impact of the gas flow on the seed surface, CFD simulations and Schlieren imaging were performed and surface characteristics were studied using a digital microscope. Plasma treatment of the seeds was carried out four times (2, 5, 10 and 15 s) with one control group. Pre-sowing plasma stimulation of seeds improved the germination capacity and germination energy for all tested groups in comparison to the control. The best germination capacity and energy were obtained for seeds stimulated with 10 s of plasma treatment. Analysis of the data showed a statistically significant impact of plasma treatment on the onion seed’s germination parameters. Plasma treatment did not induce significant changes on the seed surface, as microscope images showed but length of all plasma-treated seedlings increased in comparison to control.

中文翻译：

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短时常压等离子处理对洋葱种子的影响

本文介绍了射频冷大气等离子体射流中产生的冷等离子体（He + O 2 和 He + Air）对洋葱 cv 萌发过程的影响的实验结果。Wolska ( Allium cepa L.) 种子。为了确定气流对种子表面的影响，进行了 CFD 模拟和纹影成像，并使用数字显微镜研究了表面特性。用一个对照组对种子进行四次等离子处理（2、5、10 和 15 秒）。与对照相比，种子的播种前等离子体刺激提高了所有测试组的发芽能力和发芽能量。用 10 秒的等离子体处理刺激的种子获得了最佳的发芽能力和能量。数据分析表明，等离子体处理对洋葱种子的发芽参数具有统计学上的显着影响。正如显微镜图像所示，等离子体处理不会引起种子表面的显着变化，但与对照相比，所有等离子体处理的幼苗的长度都增加了。