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Determination of vine varieties

There are various ways of uniquely identifying a grape variety. In the past, this was done exclusively on the basis of the external condition of the vine on the basis of the phenotype or habitus, i.e. the morphological characteristics of the plant parts shoot, leaf, grape and berry, as well as the taste of the fruit. Other criteria are the characteristics of the vegetative cycle, such as the time of flowering, budding or ripening. Until the end of the 1980s, this was the only way to determine the identity of grape varieties. Naturally, misinterpretations occur, as this method is not 100%. An absolute luminary of visual variety identification was the French ampelographer Pierre Galet (*1921).

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