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Hydroquinone 4% –the medical cream as alternative to phenol for identification of wheat varieties

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Seeds of six common wheat (Triticum aestivum L.) and two durum (Triticum durum Desf.) varieties were exposed to a phenol (1%) and hydroquinone (4%) medical cream in a colour reaction test, for varietal identification. The test was based on the evaluation of the intensity of the seed pericarp coloration. All common wheat varieties, with the exception of Mexipak, coloured black in reaction to phenol (1%) or hydroquinone (4%), while the Mexipk variety changed colour, but was faded. Durum varieties on the other hand, did not show any colour changes in reaction to either reagent. It is concluded that the hydroquinone (4%) medical cream has the potential to be a useful alternative for varietal identification or purity analysis of wheat.
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Document Type: Research Article

Publication date: July 1, 2008

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  • Seed Science and Technology (SST) is one of the leading international journals featuring original papers and review articles on seed quality and physiology as related to seed production, harvest, processing, sampling, storage, distribution and testing. This widely recognised journal is designed to meet the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality.
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