High Resolution Melting (HRM) analysis on VviDXS to reveal muscats or non-muscats among autochthonous Greek wine producing grape varieties
<p style="text-align: justify;">Muscat flavor in grapes is associated with a substitution of a Single Nucleotide Polymorphism (SNP) located at position 1822 (SNP<sub>1822G>T</sub>) within the coding sequence of the <em>VviDXS</em> gene. Various methods, including the use of High Resolution Melting (HRM) analysis, have been suggested to discriminate different SNP allelic states including the molecular discrimination of the muscat from the non-muscat grape varieties, thus providing the ability to minimize lengthy grape breeding programs when selecting for grape muscat flavor before the fruit maturity stage. HRM analysis on the SNP<sub>1822</sub> was performed on a group of 128 wine producing grape varieties in order to separate the muscat from the non-muscat genotypes before they are used for further breeding activities. This approach could be used either as a single-step prescreening method or in accordance with recently published methodology to elucidate on varietal characterization and authentication as these are important requirements concerning nurseries, growers and winemakers.</p>