The French Ampelograph Paul Truel (* 1924) studied at the Department of Viticulture at the French University in Montpellier (Languedoc). This was when Pierre was there Galet (1921-2019) was the responsible manager. Like him, he was an absolute specialist in the determination of grape varieties, which he often spontaneously and purely visually due to the phenotype could identify. For many years Paul Truel was responsible for the collection of grape varieties in the Montpellier branch Domaine de Vassal. It is the largest of its kind in the world.
His internationally recognized achievements include checking the range of vines in Australia and Portugal, as well as the Wine Institute Magarach in Ukraine. It was decisive in determining or describing the varieties Abouriou. alarije. Canari Noir. Bouillet. Crouchen. Muscadelle. Ondenc and Roussette d'Ayze involved. He only put them through much later DNA analysis proven claim that the two varieties Durif and Petite Sirah are identical.
Unfortunately, unlike colleague Galet, Paul Truel never published much, which is why he was wrongly a little bit in his shadow. Paul Truel focused almost exclusively on grape collection and identification. Among other things, he created the new varieties Aranel. Caladoc. Chasan. Clarin. Danlas. Ganson. Gramon. Lival. Marselan. Monerac. Portan. Ribol and Segalin, In Vassal, he created an extensive register of grape varieties and a well-stocked herbarium (plant collection), which are important tools for determining grape varieties.