Impact of microsecond-pulsed plasma-activated water on papaya seed germination and seedling growth

席登科; 张先徽; 杨思泽; 叶尚姗; 石川健治; 堀勝; 叶尚凌

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Impact of microsecond-pulsed plasma-activated water on papaya seed germination and seedling growth

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The seed of Carica papaya consists of a hard shell-like testa with inhibitors in vivo causing slow,erratic and asynchronous germination.In this work,plasma-activated water prepared by microsecond-pulsed plasma jets(μPAW)was applied to treat papaya seeds.TheμPAW after plasma activation of 30 min was about 40℃.The reactive species such as NO_(2),NO_(3),and H_(2)O_(2)in theμPAW activated from deionized water were measured and correlated to the seed germination rate and the seedling growth performance.TheμPAW-treated papaya seed achieved a higher germination rate of 90%,which is 26%higher than the control group using deionized water.Comparing the results with a hot water(40℃)reference group showed that the reactive species inμPAW played primary roles in germination improvement,with little effect caused by the heat shock.TheμPAW also sterilized the treated seeds,reducing the germination stress.The morphological change in the seeds was observed by SEM,showing an effect of physical etching after treatment promoting seed imbibition.The biochemical mechanism of the seed germination was deduced with reference to the evolution of surface chemistry,functional groups,and ABA content.The accelerated seed metabolism observed was corresponded to the chemical modification pathway.Besides,early seedlings developed from treated seeds were observed to be healthy,grow more leaves,and have better root structures.The content of MDA in the treated papaya seedlings decreased along with increased SOD and higher ion concentration.TheμPAW that can be prepared at atmospheric pressure for bulk production offers a low-risk and cost-effective seed priming technology that may significantly increase the production of agricultural crops.

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《中国物理：英文版》 |2022年第12期|630-641|共12页
作者
席登科; 张先徽; 杨思泽; 叶尚姗; 石川健治; 堀勝; 叶尚凌;
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作者单位

Plasma Technology Research Center;

Department of Physics;

Faculty of Science;

University of Malaya;

Kuala Lumpur 50603;

Malaysia;

Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance;

Fujian Engineering Research Center for EDA;

Fujian Provincial Key Laboratory of Electromagnetic Wave Science and Detection Technology;

Xiamen Key Laboratory of Multiphysics Electronic Information;

Institute of Electromagnetics and Acoustics;

Xiamen University;

Xiamen 361005;

China;

Department of Physics;

Xiamen University Malaysia;

Selangor Darul Ehsan 43900;

Malaysia;

Center for Low-temperature Plasma Sciences;

Nagoya University;

Nagoya 464-8603 Aichi;

Japan;

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原文格式 PDF
正文语种 chi
中图分类木瓜;
关键词
plasma-activated water; non-thermal plasma; microbial inactivation; seed metabolism;

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Impact of microsecond-pulsed plasma-activated water on papaya seed germination and seedling growth

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