In this study, a direct-current multineedle-plate corona discharge with different parameters was used to treat Ammopiptanthus mongolicus (Maxim. ex Kom. Cheng f.) seeds and study the effect of corona discharge physicochemical etching on these seeds. Results showed that the surface of the seed coat of A. mongolicus had wind erosion after corona discharge treatment, a large number of small ravines were generated and the surface crack of the seed coat was serious. Analysis of Fourier transform infrared spectroscopy revealed that the hydrophilic functional groups increased and corona discharge changed the chemical structure of A. mongolicus seed coat. The apparent contact angle decreased significantly from 99.82° ± 4.86° to 60.11° ± 8.44°, suggesting that corona discharge could significantly improve the hydrophilicity of A. mongolicus seeds. All the corona discharge treatment groups had seed germination at 24 h, whilst the control group had zero germination. This finding suggested that corona discharge treatment could significantly affect the structure and properties of A. mongolicus seed coat, improve the seed hydrophilicity and water absorption rate and promote the germination and growth of A. mongolicus seeds. This study provided ideas and experimental data support for the analysis of the mechanism of corona discharge biotechnology and seed-surface modification.

中文翻译：

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直流电晕放电对沙冬青种子的影响


本研究采用不同参数的直流多针板电晕放电处理沙冬青种子，研究电晕放电物理化学蚀刻对沙冬青种子的影响。结果表明，经电晕放电处理后，沙枣种皮表面出现风蚀，产生大量小沟壑，种皮表面裂纹严重。傅里叶变换红外光谱分析表明，亲水性官能团增加，电晕放电改变了沙枣种皮的化学结构。表观接触角从99.82°±4.86°显着降低至60.11°±8.44°，表明电晕放电可以显着提高蒙古沙蚕种子的亲水性。所有电晕放电处理组种子在24 h时均出现发芽，而对照组则为零发芽。研究结果表明，电晕放电处理可显着影响沙枣种皮的结构和性质，提高种子的亲水性和吸水率，促进沙枣种子的萌发和生长。该研究为电晕放电生物技术和种子表面改性的机理分析提供了思路和实验数据支持。