ISSN Imprimer: 1947-5764
ISSN En ligne: 1947-5772
Volume 10, 2020
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Volume 1, 2011
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,
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
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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