介质阻挡放电等离子体对枸杞种子萌发的作用  

Effect of dielectric barrier discharge plasma on seed germination of Lycium barbarum

作　　者：荣俊锋[1] 朱佳丽 张成援 赵彬彬 陈明功[1] RONG Junfeng;ZHU Jiali;ZHANG Chengyuan;ZHAO Binbin;CHEN Minggong(School of Chemical and Blasting Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学化工与爆破学院,淮南232001

出　　处：《辐射研究与辐射工艺学报》2025年第1期83-93,共11页Journal of Radiation Research and Radiation Processing

基　　金：安徽省现代环境工程国际联合研究中心(安徽理工大学)开放基金重点项目(XDHJGC2022002);国家级、省级大学生创新创业项目(202410361172、S202410361169);安徽理工大学专利转化培育项目(ZL201902)。

摘　　要：为促进枸杞种子的萌发,探究介质阻挡放电(DBD)产生低温等离子体(NTP)对枸杞种子萌发的影响及最佳处理工艺。以枸杞种子为研究对象,采用自制针板式介质阻挡放电等离子体反应器对枸杞种子进行处理。固定针板电极距离样液的距离为5 mm,考察在不同放电时间、放电电压及电解质种类情况下介质阻挡放电等离子体对枸杞种子萌发的影响。在单因素实验的基础上,以种子发芽率、活力指数为指标,采用响应面优化枸杞种子处理工艺,通过种皮形貌观察与接触角测定,初步探讨了介质阻挡放电等离子体对种皮结构和性质的影响。结果表明:在放电时间为1 h、放电电压为35 k V、150 m L浓度为0.2%的Na_(2)SO_(4)水样条件下,处理后的枸杞种子发芽率为86.67%,未处理的枸杞种子的发芽率为33.33%,发芽率增加了53.34%;活力指数为600.58,没有处理过的种子的活力指数为206.9,活力指数上升了65.55%。处理后种皮变得平整、纹理模糊,种子亲水性增强。本研究提供了一种清洁、高效提高植物种子萌发率的方法。The germination-promoting effects of low-temperature plasma produced by dielectric barrier discharge on Lycium barbarum(L.barbarum)seeds and the optimal treatment process were investigated using a pin-plate dielectric barrier discharge plasma reactor.The distance between the fixed needle plate electrode and the sample liquid was 5 mm.The effects of dielectric barrier discharge plasma on L.barbarum seed germination were investigated at different discharge times,discharge voltages,and electrolyte types.In this single-factor experiment,the response surface was used to optimize a seed treatment protocol for L.barbarum,and the effect of dielectric barrier discharge plasma on seed coat structure and properties was investigated by observing seed coat morphology and measuring the contact angle.Under discharge conditions including a discharge time of 1 h,a 35 kV discharge voltage,and 150 mL of 0.2%aqueous Na_(2)SO_(4),the germination rate of treated L.barbarum seeds was 86.67%,and that of untreated seeds was 33.33%,an increase of 53.34%.The treated seed vitality index was 600.58,and that of untreated seeds was 206.9,revealing an increase of 65.55%.After treatment,the seed coat became smooth,its texture was rough,and seed hydrophilicity was enhanced.This study provides a clean and efficient method to improve plant seed germination rates.

关 键 词：介质阻挡放电 等离子体 枸杞 发芽率 响应面分析 

分 类 号：Q691.5[生物学—生物物理学] TL99[核科学技术—核技术及应用]