Grape Species, Varieties and Rootstocks Flashcards
How many species of vine are there?
60
Vine species for fruit?
Vitis Vinifera
Vine species for rootstocks?
- Vitis Riparia
- Vitis rupestris
- Vitis Berlandieri
What is a ‘Shoot’?
A new growth that a vine produces each year
Where do Buds form?
Where leaf stem joins shoot
How do leaves help the vine?
Responsible for Photosynthesis
What is Photosynthesis?
Where plants use Chlorophyll and energy from sunlight to convert water and CO2 into the sugar Glucose and Oxygen.
What is a ‘Tendrill’?
Supports vine. Senses a structure and wraps around it (e.g. a trellis wire)
What is the job of Flowers on a vine and what do you call the bunches?
They are the vines reproductive organs. Bunches are called Inflorescences
What happens when the flowers are pollinated and how does this affect the inflorescence?
They become berries once pollinated, then the inflorescence will become the bunch of grapes that are harvested at the end of the growing season
Explain ‘One year old wood’ and what happens to the buds from the previous year?
Shoots turn woody in winter after they have grown and following spring become ‘one year old wood’. Buds burst in spring and grow into shoots.
Why is managing ‘one year old wood’ important for vine growers?
Will normally only produce fruit on shoots that grow from buds in the previous year
What do you call ‘one year old wood’ after it has been pruned?
A cane or spur, depending on how many buds are left on it.
Cane is long, 8 to 15 buds
Spur is short, 2 to 3 buds
How old is ‘Permanent wood’?
More than one year old
What is ‘Permanent wood’ made of and what can it sometimes be referred to as?
Made up of trunk and arms of vine. Sometimes referred to as ‘Cordons’.
