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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.


Related in: MedlinePlus

Picture of profile and cross section of E. velutina seed showing the parts that were sealed in the soak test.The testa corresponds to the remaining surface seed (red wrap).
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f5: Picture of profile and cross section of E. velutina seed showing the parts that were sealed in the soak test.The testa corresponds to the remaining surface seed (red wrap).

Mentions: The primary purpose of this study was to characterize both the preferential region of water uptake and the water pathway. For this purpose, specific parts were sealed with glue. Six groups of seeds were used to determine the preferential region of water uptake—three untreated and three treated with plasma—with each group containing 20 seeds (4 × 5). The seeds group untreated were divided into seeds without glue and seeds with glue applied to the hilum or micropyle. For the treated group, the following seed parts were isolated (Fig. 5): hilum, micropyle and hilum + micropyle. The water uptake was calculated by weighing before and after each seed absorption test.


Water uptake mechanism and germination of Erythrina velutina seeds treated with atmospheric plasma
Picture of profile and cross section of E. velutina seed showing the parts that were sealed in the soak test.The testa corresponds to the remaining surface seed (red wrap).
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f5: Picture of profile and cross section of E. velutina seed showing the parts that were sealed in the soak test.The testa corresponds to the remaining surface seed (red wrap).
Mentions: The primary purpose of this study was to characterize both the preferential region of water uptake and the water pathway. For this purpose, specific parts were sealed with glue. Six groups of seeds were used to determine the preferential region of water uptake—three untreated and three treated with plasma—with each group containing 20 seeds (4 × 5). The seeds group untreated were divided into seeds without glue and seeds with glue applied to the hilum or micropyle. For the treated group, the following seed parts were isolated (Fig. 5): hilum, micropyle and hilum + micropyle. The water uptake was calculated by weighing before and after each seed absorption test.

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.


Related in: MedlinePlus