Ampelography Flashcards
Ampelography
discipline allowing description of all grapevine varieties in the world in order to make possible their identification; name is derived from Greek words ‘ampelos’ (grapevine) and ‘graphe’ (description)
Aims of Ampelography
characterize, identify, solve problems of synonyms and homonyms among grapevine varieties and Vitis species; **not only the vines used for winemaking
Ampelography based on…
description of different grapevine organs, primarily the leaf; crucial the described organ morphology is not affected by interaction with environment
Ampelographic synonym
varieties having same genotype but different name (ex. Primitivo and Zinfandel)
Ampelographic homonym
varieties having different genotype but same name (ex. Chardonnay and Pinot blanc)
Descriptor list for grape vine varieties and Vitis species (1983)
OIV, UPOV, IBPGR
OIV
Organisation Internationale de la Vigne et du Vin; cultural and technological characteristics
UPOV
Union Internationale pour la Protection des Obtentions Végétales; protection of new varieties
IBPGR
International Board for Plant Genetic Resources; gene banks
OIV descriptors
OIV numbers; notes, words describing corresponding figure; example varieties are indicated if possible; definitions- additional information about how and when characteristics need to be described; figures
Descriptor classification- quantitative
measurable on one dimensional scale and showing continuous variation between two extremes; scores may vary from 1 to 9 (ex. cod. 004: young shoot-density of prostrate hairs on tip)
Ampelographic card
descriptive method that is essentially based on morphological plant habit
Ampelometry
measurements of parameters from different plant organs (leaves, fillometry; fruits-carpometry)
Determination of secondary metabolites
anthocyannins and volatiles
Analysis of isoenzyme systems
Isoenzyme is one of different chemical structures of enzyme
