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


Picture of the E. velutina seed, showing details of the parts that were examined.
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f3: Picture of the E. velutina seed, showing details of the parts that were examined.

Mentions: It is common for species belonging to the family Fabaceae, such as E. velutina, to have a testa formed of impermeable cells. The testa is generally arranged as a palisade with thick and lignified secondary walls, whereas the macrosclereids, the most common cells, are filled with hydrophobic substances such as cutin, quinones, insoluble pectins, suberins and waxes15. The hilar region of E. velutina (Fig. 3B) comprises shows details the micropyle (Fig. 3C) and hilum (Fig. 3A). The micropyle has thick endothelial cells that can expand and increase the absorption of water.


Water uptake mechanism and germination of Erythrina velutina seeds treated with atmospheric plasma
Picture of the E. velutina seed, showing details of the parts that were examined.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f3: Picture of the E. velutina seed, showing details of the parts that were examined.
Mentions: It is common for species belonging to the family Fabaceae, such as E. velutina, to have a testa formed of impermeable cells. The testa is generally arranged as a palisade with thick and lignified secondary walls, whereas the macrosclereids, the most common cells, are filled with hydrophobic substances such as cutin, quinones, insoluble pectins, suberins and waxes15. The hilar region of E. velutina (Fig. 3B) comprises shows details the micropyle (Fig. 3C) and hilum (Fig. 3A). The micropyle has thick endothelial cells that can expand and increase the absorption of water.

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.