Effect of Seed Coating with Rhodamine B on Seed Quality and Fluorescence for Anti-Counterfeiting of Tomato Seed
Main Article Content
Abstract
Seeds coated with fluorescent compound is an alternative method for identity and providing
securing for the high value seeds. The objective of this experiment was examined seeds coating of
rhodamine B fluoresceting on seed and seedling of tomato. The experiment was conducted at Seed
Technology Section of Seed Processing Plant, Faculty of Agriculture, and tested detection of the
fluorescence on the seed at Central Laboratory, Faculty of Technology Khon Kaen University. Seed
coating substance were prepared by using 5% of Polyvinylpyrrolidone (K30) as a polymer. After that,
rhodamine B was added at four different label rates: 0.125, 0.150, 0.175 and 0.200% per 100 ml of polymer
solution subsequently, tomato seeds were coated used of the Centric Coater, Model SKK 10. After coating
process, the coated seeds were divided into 2 parts. The first part was evaluated and detected for
fluorescence on seeds and the 14-days seedlings of tomato using hand-UV (Model UVGL-58; λ=365 nm.)
and Spectrophotometer. The second part was evaluated seed quality after coating. The results showed
that the coated seeds with rhodamine B had orange fluorescence light both on seeds and the 14-days
seedlings. Additionally,the coated seed with rhodamine B had no effects on seed germination and vigor
when tested under laboratory and greenhouse conditions. The conclusion of this experiment is rhodamine
B can be used as seed coating substance for identity of tomato seeds. In addition, it can be detected the
fluorescent of rhodarmine B on the seedlings.
Article Details
King Mongkut's Agricultural Journal
References
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