VMW101 Lesson 2 Flashcards
(81 cards)
Name for part of the graphed that is clipped in order to be grafted onto a root stock
Scion
Refers to the specific area where Vitis Vinifera is bonded with Vitis root stock
Graft union
The lower part of a grapevine. Typically an American species or hybrid?
Rootstock
What is a rootstock?
A cutting taken from a vine usually a native North American species or cross, that serves as a root system for a scion after grafting
What is a scion?
A cutting from a vine usually a V. vinifera grafted onto Rootstock of another vine.
What is the difference between shoots and canes
Shoots are green canes and canes are after they harden off
Where is the head located
At the top of the trunk in between the cordons
What are the two parts that make up the canopy
Leaves and grape bunches
True or false a cordon is an arm?
True
True or false shoots and canes could be referred to as arms
True
What does own rooted referred to
Roots from the Vitis vinifera
Non-V. vinifera roots are referred to as what?
Root stock
What are the five main functions of a rootstock?
- Physically stabilizes the plants
- Collects water
- Collects and stores nutrients
- Stores carbohydrates.
- Produce plant growth regulator’s
The major function of fine roots
To absorb as much H2O in nutrients as possible
Find roots are also referred to as
Feeder roots
What is the size of feeder roots
.10- 1mm in diameter
Where are most of the find Roots located
In the first 2 feet of soil
What is the main function of woody roots
Anchors DeVine absorbs a little H2O nutrients
How deep can Woody roots grow
90 to 100’ if there’s no impediments
What are the three primary Meristems
protoderm, ground meristem, and Procambium
What are three root stocks
V. Riparia, V. Rupestris, and V. Berlandieri
6facts about V. Riparia (native to Midwest USA)
Found along river banks. Shallow roots not drought tolerant High resistance to water logging Poor line tolerance Early budding and to harvest Low vigor Often used as parent rootstock. Cold hardy to -25F Tolerance to phylloxera
6 facts about rupestris
Native to SW USA Almost extinct in the wild Found in rocky creek beds Vigorous rootstock Drought tolerant Phylloxera tolerance
6 facts about V. Berlandieri
Native to Texas and E. Mexico Lime tolerant Drought tolerant Not good in wet soils Breaks bud and ripens late Difficult to graft Exclusionary to K+ in soil
