Viticulture Ch 1

Question 0

Where is vitis vinifera native to

Answer 0

Although known as the European vine it is native to the Middle East

Question 1

How many acres in a hectare

Answer 1

2.47
1ha= 10,000sq meters
4840 sq years

Question 2

What is a cultivar

Answer 2

Grape variety

Question 3

What are the growth hormones that turn plant matter into crops

Answer 3

Gibberellins

Question 4

What is the distance between nodes

Answer 4

Internode

The length determines how many buds occur on any given surface

Question 5

What are the 5 main factors determining root size

Answer 5

Own roots or grafted
Type of rootstock
Soil conditions
Water supply
Climate

Question 6

What are 4 main purposes of roots

Answer 6

Anchor the plant
Conduit for nutrients and moisture
Store reserves of nutrients and moisture
Barrier against variations of supplies

Question 7

What degree on the top soil causes the plant to produce sap

Answer 7

10 degree Celsius

Question 8

What is ONIVINS

Answer 8

France’s “office national interprofessionel des vins”

Question 9

How many clones of Pinot noir allowed in France
Chardonnay in France
Chardonnay champagne

Answer 9

43
28
11 (CIVC) comite interprofessionel du vin de champagne

Question 10

What is a scion

Answer 10

The productive top half of a grafted vine

Question 11

What is layering

Answer 11

A method of filling in gaps in a vineyard by using shoots from a neighboring vine

Question 12

What is the term for mass clonal selection

Answer 12

Selection massale

Question 13

What is a chimera?

Answer 13

Also known as sport of bud sport

When a plant produces a shoot, leaf, flower or fruit markedly dissimilar from the norm

Question 14

What are grapes with both red skin and flesh called

Answer 14

Teinturier

Question 15

How is cross breeding accomplished

Answer 15

Pollen bearing anthers removed by tweezers (emasculation) and pollen from the male variety is then dusted onto the ovary

Question 16

What is the crossing of muller-Thurgau

Answer 16

Riesling and Madeline royale
Also known as Rivaner in Luxembourg
Riesling Silvaner as well
Developed by Dr. Hermann Muller in Geisenheim in 1882

Question 17

What is the crossing for Dornfelder

Answer 17

Developed by August Herold in 1955 at Weinsberg

Helfensteiner x heroldrebe

Question 18

What is the crossing for Scheurebe

Answer 18

Silvaner X riesling

Question 19

What is the crossing for Bacchus

Answer 19

Silvaner x riesling x muller Thurgau

Question 20

What is the crossing for Tarranga

Answer 20

Touriga x sultana

Question 21

What are interspecific crossings?

Answer 21

Combination of genes from two species i.e. Vinifera and non-vinifera

Question 22

Name 6 key non vinifera USA cultivars

Answer 22

Catawba
Clinton
Concord
Delaware
Niagara
Norton

Question 23

Name 2 interspecific crosses

Answer 23

Regent

Phoenix

Question 24

Name two synonyms for Zinfandel

Answer 24

Primitivo in Italy

Crjenak in Croatia

Question 25

What are abiotic factors

Answer 25

Non-living factors of the earth which effect the ability of living organisms to survive in an environment

Question 26

What is the name of the machine commonly used for grafting vines

Answer 26

Omega
Joins two halves of the vine - the single bud scion and the longer (300mm) piece of rootstock - with an omega shaped jigsaw type of joint which holds the scion and the rootstock tightly together

Question 27

What is the bark of a shoot called

Answer 27

Cambium

Question 28

What is layering

Answer 28

Provignage
Taking a suitably positioned cane from a neighboring vine and laying it down on the ground. This will cause it to grow roots and eventually it can be separated and grow on its own

Question 29

What is a downfall of layering

Answer 29

It will grow on its own rootstock = phylloxera

Inherits downfall of parent

Question 30

What is repiquage

Answer 30

Replanting young vines within old vines

Question 31

What is top-grafting

Answer 31

Taking a mature cropping vine and grafting wood containing buds from another variety onto the trunk