In the current study, a square assembly of four quad-atmospheric pressure plasma jets (q-APPJ) is used to treat large-sized chilli seeds simultaneously. Germination and growth characteristics improve significantly after a 10-sec treatment of q-APPJ employing argon as the working gas. Plasma-treated chilli seed is more etched and porous than those untreated seed surface, as shown in scanning electron microscopy. The chemical changes of the plasma-treated seeds showed that the Ar plasma-treatment oxidise the seed surface to enhance their wettability, stimulate the water uptake, increase the water electrical conductivity and result in improved seed germination. In addition, optical emission spectroscopy is used to detect the different plasma species present and evaluate their plasma parameters (electron temperature and density). These positive results suggested that Ar plasma-treatment, in APPJ setup, improve seed germination, and potentially improve crop yield, and food security issues.

在当前的研究中，四个四大气压等离子体射流（q-APPJ）的方形组件用于同时处理大尺寸的辣椒种子。使用氩气作为工作气体对 q-APPJ 进行 10 秒处理后，发芽和生长特性显着改善。如扫描电子显微镜所示，经过等离子体处理的辣椒种子比未经处理的种子表面有更多的蚀刻和多孔。等离子体处理种子的化学变化表明，Ar等离子体处理氧化了种子表面，增强了其润湿性，刺激了水的吸收，增加了水的电导率，从而改善了种子的发芽率。此外，光学发射光谱用于检测存在的不同等离子体种类并评估它们的等离子体参数（电子温度和密度）。这些积极的结果表明，在 APPJ 设置中，Ar 等离子体处理可以改善种子发芽，并有可能改善作物产量和解决粮食安全问题。