ROOTSTOCKS

Question 1

What species of vines are used as parentage for rootstocks?

Answer 1

V. Vinifera, V. Rupestris, V. Riparia, V. berlandieri, V. Champini

Question 2

Rootstock of V. Riparia parentage?

Answer 2

Riparia Gloire de Montpellier

Question 3

Rootstock of Vitis Rupestris?

Answer 3

Rupestris du Lot

Question 4

Discuss nitty gritty of Riparia Gloira de Montpillier (VSLDPN)

Answer 4

low vigour, prefers humid, cool, fertile soils. Low lime tolerance and a low resistance to drought. High resistance to Phylloxera, Medium (+) resistance to nematodes.

Question 5

What is the overall description for Riparia Gloire Montpillier

Answer 5

Suitable for production of quality wines, sensitivity to compact soils. Prefers moist soils (rainy, large production areas. i.e. Otago)

Question 6

Discuss nitty gritty of Rupestris du Lot (VSLDPN)

Answer 6

(need a LOT or land). Extremely vigorous. Deep, poor, healthy soils prefered. Low tolerance to lime, medium resistance to drought. High tolerance to phyll., Medium (+) resistance to nematodes.

Question 7

What is the overal description for Rupestris du Lot

Answer 7

High vigour. Mediterranian rootstock. Sensitive to shatter berries and compact soils.

Question 8

What rootstock is of Vinifera x rupestris parentage ?

Answer 8

AXR1 (ARG1)

Question 9

Discuss nitty gritty of AXR1

Answer 9

High Vigor. Versatile when it comes to preferred soil. High tolerance to lime. Medium resistance to drought, low tolerance to phylloxera, medium (-) resistance to nematodes

Question 10

What is the overall description for AXR1?

Answer 10

Easy to graft. Yields high quality fruit with good yields, but limited tolerance to phylloxera. Widely used in California (Tommy!!!)

Question 11

V.
S.
L.
D.
P.
N.

Answer 11

V.igor
S.oil preference 
L.ime tolerance
D.rought tolerance 
P.hylloxera tolerance 
N.ematode tolerance 

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Question 12

Benefits of Vinifera x rupestris rootstock (ARX1)

Answer 12

Offers some lime tolerance from vinifera, but shows inadequate tolerance to phylloxera.

Question 13

Benefits of Riparia x rupestris rootstock (3309 C, 101-14, Schwarzman)

Answer 13

Halfway between surface and deep rooting. Average vigour, grafts well, good affinity with scions. Good resistance to phylloxera, but poor to chlorosis (not enough iron)

Question 14

Rootstocks of Riparia x rupestris parentage

Answer 14

101-14, 3309 C (Couderc), Schwarzman

Question 15

VSLDPN for 3309 C (Couderc)

Answer 15

+++, cool fertile, permeable. low, +, ++++, ++++

Question 16

Overview of 3309 C (Courderc)

Answer 16

Fruits well. WIdely used throughout switzerland, france, germany. Great for acidic soils

Question 17

VSLPDN for 101-14

Answer 17

++, cool, fertile, damp, low, +, ++++, +++

Question 18

overview of 101-14

Answer 18

suitable for quality wine production

Question 19

VSLPDN for Schwarzman

Answer 19

++, deep, moist, low, +, ++++, +++++

Question 20

overview of Schwarzman

Answer 20

got a nematode problem?

Question 21

Benefits of riparia x berlandieri rootstocks (161-49C, 420A, 5C)

Answer 21

Surface or semi-surface rooting. Good rooting, high resistance to chlorosis. good affinity with scions and resistance to phylloxera.