The French Ampelograph Paul Truel (* 1924) studied at the Department of Viticulture of the French University in Montpellier (Languedoc). This was at the time when there was Professor Pierre Galet was responsible manager. Like this, he was an absolute specialist in the determination of grape varieties, which he often spontaneously and purely visually based on the phenotype could identify. Paul Truel was responsible for the collection of vines in the Montpellier branch office Domaine de Vassal for many years. This is the largest of its kind in the world.
His recognized achievements worldwide include the inspection of vine varieties in Australia and Portugal as well as in the Viticulture Institute Magarach in Ukraine. He was instrumental in determining or describing the varieties Abouriou. alarije. Canari Noir. Bouillet. Crouchen. Muscadelle. Ondenc and Roussette d'Ayze involved. He also did that much later DNA analysis Proven claim that the two varieties Durif and Petite Sirah identical.
Unfortunately Paul Truel has unlike his colleague Galet never published much, which is why he was wrongly a little in the shade. Paul Truel focused almost exclusively on the collection of vines and identification. He created, among other things, the new breeds Aranel. Caladoc. Chasan. Clarin. Danlas. Ganson. Gramon. Lival. Marselan. Monerac. Portan. Ribol and Segalin, In Vassal he created an extensive grape variety index and a well-sorted herbarium (plant collection), which are important tools for grape variety determination.