Physicochemical surface analysis and germination at different irrigation conditions of DBD plasma-treated wheat seeds

被引:41
作者
Molina, Ricardo [1 ]
Lalueza, Alba [1 ]
Lopez-Santos, Carmen [2 ,3 ]
Ghobeira, Rouba [4 ]
Cools, Pieter [4 ]
Morent, Rino [4 ]
de Geyter, Nathalie [4 ]
Gonzalez-Elipe, Agustin R. [2 ]
机构
[1] CSIC, Dept Biol Chem, Inst Adv Chem Catalonia IQAC, Barcelona, Spain
[2] CSIC, Dept Nanostruct Funct Mat, Inst Mat Sci Seville US CSIC, Nanotechnol Surfaces & Plasma Grp, Seville, Spain
[3] Univ Seville, Dept Atom Mol & Nucl Phys, Seville, Spain
[4] Univ Ghent, Dept Appl Phys, Res Unit Plasma Technol RUPT, Ghent, Belgium
关键词
atmospheric plasma; dielectric barrier discharge (DBD); germination; irrigation; plasma agriculture; surface analysis; wheat seed; PRESSURE PLASMA; MICROORGANISMS; INACTIVATION; TEMPERATURE; CHEMISTRY; DORMANCY; GROWTH; FIBER; FTIR; JET;
D O I
10.1002/ppap.202000086
中图分类号
O59 [应用物理学];
学科分类号
摘要
Plasma treatment is increasingly being explored as an effective presowing treatment improving seed germination. This study examines the synergetic effect of the irrigation condition and the physicochemical surface properties of wheat seeds subjected to atmospheric dielectric barrier discharge plasma activation on their water uptake and germination. Extensive surface analysis revealed a remarkably enhanced wettability of plasma-treated seeds due to the insertion of oxygen-containing functionalities on their surface. However, long plasma exposures damaged the outermost layers of the pericarp due to a pronounced oxidative etching effect. Although the seed germination capacity was not affected by the plasma treatments, short plasma exposures were shown to enhance water uptake and accelerate seed germination, especially under water-scarcity conditions.
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页数:15
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