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Plasma Medicine
SJR: 0.271 SNIP: 0.316 CiteScore™: 1.9

ISSN Imprimer: 1947-5764
ISSN En ligne: 1947-5772

Plasma Medicine

DOI: 10.1615/PlasmaMed.2019031667
pages 111-120

Effect of Plasma-Activated Water on Soaking, Germination, and Vigor of Erythrina velutina Seeds

Clodomiro Alves Junior
Department of Exact and Natural Sciences, Federal Rural University of Semiarid Mossoró, 59.625-900 Brazil
F. L. G. de Menezes
Federal Rural University of Semiarid Mossoró-RN, Brazil
J. de O. Vitoriano
Federal Rural University of Semiarid Mossoró-RN, Brazil
D. L. S. da Silva
Center for Agricultural Sciences State University of Piauí Teresina-Pi, Brazil

RÉSUMÉ

In this study, physiology, germination, and seedling growth of seeds were analyzed after immersion in plasma-activated water. A dielectric barrier discharge (DBD) plasma dripper was developed to treat the water. Erythrina velutina seeds were immersed in water plasma-activated at a peak-to-peak voltage of 37, 43, or 49 kV and monitored during imbibition. While the seeds were imbibing, pH, electrical conductivity, and UV-Vis absorption of the exudate were measured. The seeds released substances during imbibition, maintaining pH between 5 and 6. This fact may be used as a strategy to control plant physiology and seed germination. It was observed that water treated at a voltage of 49 kV presented higher germination rates and seed vigor. Physiological aspects that explain this effect and its consequences on germinative response are discussed.

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