Ch3-GrapeVarieties Flashcards
What is the genus for grapes?
Vitis
What is the most common species of grapes?
Vinifera
Where did vitis vinifera vines develop?
Caucasus mountains region between Europe and Asia
What is a vine subspecies?
grape variety
What is the second most important species of grapes?
vitis labrusca
Where were labrusca vines found?
growing wild in america during the colonia period
Why are labrusca grapes important?
they are sweet, flavorful, including Concord. Make table grapes for fresh consumption and plain grape juice
Why are labrusca grapes not good for wine making?
high acidity and foxy flavor / aroma
What is an advantage of american vines over vinifera?
natural resistance to phylloxera
How did american vines help vinifera?
grafted the scion from vinifera onto the american trunk (rootstock) to make phylloxera resistant vine
What is a species?
grouping of plants / animals that are genetically similar. Broad characteristics in common; produce viable offspring through sexual reproduction.
What is a variety?
a subspecies in grapes; share characteristics of appearance, flavor, growth. i.e Chardonnay and Syrah
What is a clone?
copies of a parent grape, propagated by asexual means. Can also mean slightly different from parent when genetic variations occur due to different surroundings
What is a mutation?
Vine developed different charactertiscs from parents due to imperfect reproduction of calls. This is a slow process
What is a cross?
offspring of sexual reproduction between different subspecies i.e. Cab Sauv is the result of Cabernet Franc and Sauvignon Blanc
What is a hybrid?
result of sexual reproduction between 2 different species i.e. between vitis vinifera and vitis labrusca
Examples of 3 well known hybrid varieties.
Seyval Blanc, Vidal Blanc, Baco Noir
What are hybrids challenging for wine making?
struggle to develop tannins, can have high acid
what is an indigenous grape variety?
one that hasn’t been widely transplanted or successfully grown outside a specific country or region
What are 3 other terms for indigenous variety?
traditional, native, autochthonous
What is the worlds most popular white grape variety?
Chardonnay
Where does Chardonnay come from?
Burgundy, France
What soil gives Chardonnay the best flavor?
limestone
What is a California style Chardonnay?
less acid, fuller body