Latin term for scion or offspring, used by the Russian researcher Dr. Alexander Mikhailovic Negrul (1900-1971) as the name for his grape variety classification. There were always attempts to find a grouping based on geographical origin, use (wine grapes and table grapes) or external characteristics. Negrul was also concerned with this and finally created three ecological-geographical groups from 1946 to 1958 on the basis of studies on Russian varieties, which he called Proles. This classification is based, among other things, on the differentiation of the hairs on the undersides of the leaves during shoots. However, this system is not based on botany, but on geography. That is, the (presumed) origin or occurrence was used.
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Roman Horvath MW
Domäne Wachau (Wachau)