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Water uptake mechanism and germination of Erythrina velutina seeds treated with atmospheric plasma

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ABSTRACT

The effect of plasma applied to mulungu (Erythrina velutina) seeds was studied to verify its influence on the germination, water absorption, wettability and structure of the seeds. The plasma jet used in this study was produced by dielectric barrier discharge (DBD) in a helium gas flow of 0.03 L/s at a distance of 13 mm for 60 s. The plasma treatment significantly affected the seed germination rate, which was approximately 5% higher than that of the untreated group. Micropyle and hilum contributed a greater proportion to uptake. When sealed in the hilar or micropyle regions the amount of water absorbed into the seed decreased approximately 75% compared to the unsealed seed. This difference suggests that these two regions together act cooperatively in the water absorption. However, when plasma treated seed was blocked in the micropyle region, water absorption was higher higher than in seeds blocked hilum. This difference suggests that the plasma treatment changed the wettability of the hilum more effectively than it changed the micropyle. These results indicate that plasma can significantly change the hydrophilicity, water absorption and percentage of seed germination in E. velutina.

No MeSH data available.


Schematic of the apparatus used for plasma generation.
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f4: Schematic of the apparatus used for plasma generation.

Mentions: Seeds of mulungu (E. velutina) were obtained in 2013 from Lagoa Grande/PE-Brazil. The research was carried out at the Federal Rural University of the Semi-arid Region, Mossoró-RN, Brazil (5° 11′ 31″ S 37° 20′ 40″ W, altitude 16 m). Figure 4 illustrates the experimental apparatus used to treat the seeds using DBD plasma.


Water uptake mechanism and germination of Erythrina velutina seeds treated with atmospheric plasma
Schematic of the apparatus used for plasma generation.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5037400&req=5

f4: Schematic of the apparatus used for plasma generation.
Mentions: Seeds of mulungu (E. velutina) were obtained in 2013 from Lagoa Grande/PE-Brazil. The research was carried out at the Federal Rural University of the Semi-arid Region, Mossoró-RN, Brazil (5° 11′ 31″ S 37° 20′ 40″ W, altitude 16 m). Figure 4 illustrates the experimental apparatus used to treat the seeds using DBD plasma.

View Article: PubMed Central - PubMed

ABSTRACT

The effect of plasma applied to mulungu (Erythrina velutina) seeds was studied to verify its influence on the germination, water absorption, wettability and structure of the seeds. The plasma jet used in this study was produced by dielectric barrier discharge (DBD) in a helium gas flow of 0.03 L/s at a distance of 13 mm for 60 s. The plasma treatment significantly affected the seed germination rate, which was approximately 5% higher than that of the untreated group. Micropyle and hilum contributed a greater proportion to uptake. When sealed in the hilar or micropyle regions the amount of water absorbed into the seed decreased approximately 75% compared to the unsealed seed. This difference suggests that these two regions together act cooperatively in the water absorption. However, when plasma treated seed was blocked in the micropyle region, water absorption was higher higher than in seeds blocked hilum. This difference suggests that the plasma treatment changed the wettability of the hilum more effectively than it changed the micropyle. These results indicate that plasma can significantly change the hydrophilicity, water absorption and percentage of seed germination in E. velutina.

No MeSH data available.