the pipeline: from tissue culture to your vineyard...california registered material available. note:...

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The Pipeline: From tissue culture to your vineyard . Tim Martinson Sr. Extension Associate Cornell University Joshua Puckett Production Manager Foundation Plant Services, UC Davis

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Page 1: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

The Pipeline:From tissue culture to your vineyard.

Tim MartinsonSr. Extension Associate

Cornell University

Joshua PuckettProduction Manager

Foundation Plant Services, UC Davis

Page 2: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

NepovirusGrapevine fanleaf virus (GFLV)

Arabis mosaic virus (ArMV)Tomato ringspot virus (ToRSV)Tobacco ringspot virus (ToRSV)Tomato blackring virus (TBRV)

Grapevine chrome mosaic virus (GCMV)Strawberry latent ringspot virus (SLRV)

Raspberry ringspot virus (RpRSV)Blueberry leaf mottle virus (BLMoV)

Grapevine Bulgarian latent virus (GBLV)Artichoke Italian latent virus (AILV)

Grapevine Tunisian ringspot virus (GTRV)Peach rosette mosaic virus (PRMV)

ClosterovirusGrapevine leafroll-associated virus 1 (GLRaV-1)Grapevine leafroll-associated virus 2 (GLRaV-2)Grapevine leafroll-associated virus 3 (GLRaV-3)Grapevine leafroll-associated virus 4 (GLRaV-4)Grapevine leafroll-associated virus 7 (GLRaV-7)

VitivirusGrapevine virus A (GVA)Grapevine virus B (GVB)Grapevine virus D (GVD)Grapevine virus E (GVE)Grapevine virus F (GVF)

FoveavirusGrapevine rupestris stem pitting-associated virus (GRSPaV)

MarafivirusGrapevine fleck virus (GFkV)

Grapevine rupestris feathering virus (GRVFV) Grapevine asteroid mosaic virus (GAMV)

Grapevine redglobe virus (GRGV)Grapevine Syrah virus-1 (GSyV-1)

GeminivirusGrapevine red blotch-associated virus (GRBaV)

Other viruses Grapevine vein clearing virus (GVCV)

Grapevine berry inner necrosis virus (GBINV)Grapevine Algerian latent virus (GALV)

Grapevine line pattern virus (GLPV)

Grapevine Viruses

No Cure!Within-Vineyard Spread

Page 3: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

NepovirusGrapevine fanleaf virus (GFLV)

Arabis mosaic virus (ArMV)Tomato ringspot virus (ToRSV)Tobacco ringspot virus (ToRSV)Tomato blackring virus (TBRV)

Grapevine chrome mosaic virus (GCMV)Strawberry latent ringspot virus (SLRV)

Raspberry ringspot virus (RpRSV)Blueberry leaf mottle virus (BLMoV)

Grapevine Bulgarian latent virus (GBLV)Artichoke Italian latent virus (AILV)

Grapevine Tunisian ringspot virus (GTRV)Peach rosette mosaic virus (PRMV)

ClosterovirusGrapevine leafroll-associated virus 1 (GLRaV-1)Grapevine leafroll-associated virus 2 (GLRaV-2)Grapevine leafroll-associated virus 3 (GLRaV-3)Grapevine leafroll-associated virus 4 (GLRaV-4)Grapevine leafroll-associated virus 7 (GLRaV-7)

VitivirusGrapevine virus A (GVA)Grapevine virus B (GVB)Grapevine virus D (GVD)Grapevine virus E (GVE)Grapevine virus F (GVF)

FoveavirusGrapevine rupestris stem pitting-associated virus (GRSPaV)

MarafivirusGrapevine fleck virus (GFkV)

Grapevine rupestris feathering virus (GRVFV) Grapevine asteroid mosaic virus (GAMV)

Grapevine redglobe virus (GRGV)Grapevine Syrah virus-1 (GSyV-1)

GeminivirusGrapevine red blotch-associated virus (GRBaV)

Other viruses Grapevine vein clearing virus (GVCV)

Grapevine berry internal necrosis virus (GBINV)Grapevine Algerian latent virus (GALV)

Grapevine line pattern virus (GLPV)

Grapevine Viruses

Nematodes

Mealybugs

Unknown

Page 4: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

How did they get here?

Page 5: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

• Self Propagation• Collection from production blocks• Nursery collection from customers

Page 6: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

• Collection in Winter• Trueness to type• Leaf symptoms not visible in dormant

grapes

Virus and Vector Identification started in ‘70s

Page 7: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Grapes in the East

1800s to 1960sNative Labrusca-type grapes dominant1940s to 1970sFrench Hybrids widely planted1970s to presentNew hybrids (Cornell, MN, Ark, Private)1980s to presentWidespread V. vinifera plantings in the East

Page 8: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Wine Grape Varieties Grown in the Finger Lakes and ‘North Country’ Native American

Concord Niagara Catawba Delaware Elvira Diamond Isabella Fredonia Dutchess Ives

Interspecific Hybrids (‘French Hybrids’) Aurore Baco noir Dechaunac Seyval blanc Marechal Foch Leon Millot Chancellor Rougeon Chambourcin Cascade Colobel Chelois Vignoles Vidal Blanc Vincent Ventura

• Interspecific Hybrids (Geneva)

– Cayuga White– Traminette– GR-7 (numbered)– Melody– Chardonel– Noiret (2006)– Corot Noir (2006)– Valvin Muscat (2006)

• Vitis vinifera– Chardonnay– White Riesling– Cabernet Franc– Pinot Noir– Cabernet Sauvignon– Gewurztraminer– Merlot– Lemberger– Viognier– Sauvignon Blanc

•Cold-Hardy (MN)FrontenacFrontenac GrisMarquetteLa Crescent

•Cold Hardy (Private)BriannaEidelweissLaCrosseSt Pepin

Page 9: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Tomato Ringspot Virus

A B

C D

Vidal blanc CheloisVidal blancBaco NoirDechaunacCascadeCheloisVentura

Page 10: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Tomato Ringspot Virus DeChaunac

-72%

-85%

Markets

Markets

Ringspot virus

Ringspot virus

Page 11: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Tomato Ringspot Virus DeChaunac

-72%

-85%

Impact in Finger Lakes:~2000 acres out of production

Page 12: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

V. vinifera cv. Cabernet franc (top), Chardonnay (bottom); Lemberger (right)

Leafroll in the Finger Lakes

Page 13: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Leafroll in Replants in 2005

Page 14: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Crown Gall Disease on Grape

Initiated at grafts in nurseryand vineyard

At base and disbudded sites of rootstocks

Page 15: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

A national network of clean plant centers, scientists, regulators and educators

Focused on providing healthy planting stock of vegetatively propagated specialty crops to nurseries and growers

What is the National Clean Plant Network (NCPN)?

Page 16: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Participating Crops:1. Fruit Trees

2. Grapes

3. Berries

4. Hops

5. Citrus

Others interested in joining

www.nationalcleanplantnetwork.org

Page 17: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Farm Bill 2008

NCPN -Section 10202:

pathogen diagnosis and elimination

existing federal/state clean plant centers

clean plant material for industry

consult with state DOAs and universities

funding - $5 million/year x 4 years ($20m total)

Page 18: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

NCPN Grapes Clean Plant Centers

UC Davis

WSU Prosser

Missouri State

Cornell

Florida A&M

Page 19: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

NCPN Grapes Clean Plant Centers

UC Davis

WSU Prosser

Missouri State

Cornell

Florida A&M

InfrastructurePipeline: From 2008 to Present

Page 20: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

The Pipeline: From Introduction to

Certified Stock

Clean Plant

Centers

Domestic varieties

Imports

PhytosanitaryStatus

Unknown

Page 21: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Certification

Clean Plant

Centers

Domestic varieties

Clean Plant

Diagnostics & TherapyImports

• Diagnostic tests for 30 pathogens (ELISA, DNA)• Woody Indexing (2 yr)• Virus elimination (meristem culture 2 yr )• Retesting

Page 22: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Certification

Clean Plant

Centers

Domestic varieties

Clean Plant

Diagnostics & TherapyImports

FPS Mother blocks

Audit & Quality Control

Nursery Mother blocks

• Budwood/cuttings distributed• 3-4 yr to full production• Mist-propagated plants (earlier)

• Mist-propagated vines in greenhouse (1 Yr)

• Grafted, planted into field• 2-4 years to full production

(50 3-bud cuttings own rooted)• Testing by NYS Dept Ag/Markets

Page 23: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Nursery Production Blocks

Certification

Clean Plant

Centers

Domestic varieties

Clean Plant

Diagnostics & TherapyImports

FPS Mother blocks

Audit & Quality Control

Nursery Mother blocks Vineyards

150 vinesX 50 2-3 bud= 7,500 vines

Page 24: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Nursery Production Blocks

Certification

Clean Plant

Centers

Domestic varieties

Clean Plant

Diagnostics & TherapyImports

FPS Mother blocks

Audit & Quality Control

Nursery Mother blocks Vineyards

2-6 YR 3-5 YR

3-4 YR 2 YR

Page 25: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Nursery Production Blocks

Certification

Clean Plant

Centers

Domestic varieties

Clean Plant

Diagnostics & TherapyImports

FPS Mother blocks

Audit & Quality Control

Nursery Mother blocks Vineyards

2-6 YR 3-5 YR

3-4 YR 2 YR

Import to Commercial Vineyard: 10-17 years

Page 26: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Expected Benefits of Certification•Viticultural Benefits

• Improved cleanliness of the planting material• Improved fruit quality• Improved yield• Improved productive lifespan of vineyards

•Economic Benefits• Reduced losses due to poor vine establishment• Increased profitability• Limited penalty for poor fruit production• Enhanced competitive edge• Enhanced reputation

$$$

Page 27: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Foundation Plant Services

Josh PuckettProduction Manager

FPS - UC Davis

The Components of Delivering Clean Grape Material

Page 28: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Foundation Plant Services UC Davis

http://fps.ucdavis.edu

Page 29: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Foundation Plant Services:

Produces, tests, maintains and distributes elite disease-tested plant propagation material

Provides plant importation and quarantine services, virus testing and elimination

Coordinates release of UC patented horticultural varieties

Links researchers, nurseries, and producers

College of Agricultural & Environmental Sciences

Page 30: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests
Page 31: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

https://www.cdfa.ca.gov/plant/pe/nsc/docs/regs/ccr_3024_grapevine.pdf

Primary Increase Block

Secondary Increase Block

Certified Nursery Planting

“Primary and secondary increase blocks shall be tested by the Department for grapevine fanleafvirus, tomato ring spot virus, and leafrollassociated viruses at least once every five years.”

Biannual Visual Inspection

“Every grapevine in a foundation block shall be periodically retested at least once every five years, by FPS, for grapevine fanleaf virus, tomato ring spot virus, and grapevine leafroll associated viruses.”

Page 32: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Pathogen Detection

Herbaceous host indexing

Woody (field) index

ELISA

RT-PCR

High throughput sequencing (HTS)

Page 33: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Chipbud 2 buds each into minimum of 6 indicator plants per variety

1. St. George

2. Cabernet franc

3. LN-33

Plant in field

Observe leaf and trunk symptoms

Woody index Procedure

Page 34: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Disbud, wax, root and pot up indicator plants

Woody index Procedure

Chipbud 2 buds/plant, 6 plants/variety

Page 35: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

2. Cut matching notch in indicator plant

Woody index Procedure

3. Place candidate bud into notch

4. Wrap with budding rubber bands

1. Cut buds off of dormant canes of candidate variety.

3

1

24

Page 36: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Harden off

Read budtake

Rub off candidate buds

Plant in field

Woody index Procedure

Page 37: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Read Indicator SymptomsCabernet franc LN33

St. George

Page 38: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Herbaceous index Procedure

Inoculate:

- Chenopodium amaranticolor

- Chenopodium quinoa

- Nicotiana clevelandii

- Cucumber ‘National pickling’

Page 39: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Dust herbaceous host indicators with carborundumpowder Inoculate indicators with ground leaf tissue with nicotine buffer Rinse leaves with water

Herbaceous index Procedure

Page 40: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Herbaceous index Procedure

Read symptoms between 7 days and 21 days post inoculation

Virus infected Virus infected HealthyHealthy

Page 41: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Laboratory DiagnosticsELISA

PCR

Cycle

Fluo

resc

ence

(dR

n)

35302520151050

700

600

500

400

300

200

100

0

Negative

10.10.010.0010.00010.000010.0000010.00000010.00000001

Page 42: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

6-12 months

Cut to < 0.5 mm

Meristem shoot tip culture

10.0 mm

Pathogen Elimination

2011 – 156 selections 2012 – 124 selections2013 – 110 selections2014 – 135 selections2015 – 128 selections

Treated

Page 43: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Test to confirm successful treatment

From Treatment to Foundation

Page 44: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Yolo county inspects shipment when opened. FPS assigns Accession number and Plant ID numbers.

Field Index Graft onto indicators:

Cabernet francKober 5BB

LN-33St. George

Process Description: Grapevine Importation through Foundation Plant Services, UC Davis (Simplified)

Fungicide, Pesticide, Hot water

dip

Move 4 plants to screenhousefor growing season

Index buds

Keep 4 plants in greenhouse for testing and tissue culture in winter

LAB TESTHerbaceous host testing, ELISA for

nepoviruses, fleck, Spring

Growing 4 plants in large pots

Evaluate Test Results

LAB TESTPCR and ELISA

Fall

Read leaf symptoms on Cabernet francFall

Read leaf symptoms on St. George, Spring

APHIS and

CDFA authorize release

Qualifies for California Registered Foundation Stock

Visual Inspection

Fall

Read trunk symptoms on St. George, LN-33, and 5BB,Summer

YEAR 1Customer submits Service Request Form to FPS andidentifies supplier.

Supplier collects woodships it to APHIS, Beltsville, MD

APHIS inspects forwards shipment to FPS

YEAR 0Document # FPS2012-01 © UC Regents S. Sim Revised March 6, 2012

Mist Propagated

Plants Available

Provisional status

YEAR 2 YEAR 3 YEAR 4 YEAR 5

Canes for propagation

LAB TESTELISA for

nepoviruses, fleck, Repeated, Spring

LAB TESTELISA for

nepoviruses, fleck, Repeated, Spring,

Visual Inspection

Fall

Mist Propagated

Plants Available

Provisional status

YEAR 6 YEAR 7

Tests positive

YEAR 8

PropagateMake 8 plants

Plant in Foundation

Vineyard

Separate Canes into 2

Bundles96 buds (ideal) for field index8 canes for propagation

Grow and Train

Trunk and Cordons

Professional IdentificationDNA and/or Visual

California Registered

Material Available

Note: The green arrow represents a best case scenario in which a grape introduction tests negative for all viruses and establishes rapidly in the vineyard.

The purple arrows represent best case scenarios in which tissue culture treatment successfully eliminates virus and the vine establishes rapidly in the vineyard.

Tests negative

YEAR 9

Presumptive Tissue

Culture for VIP Selections

Growing

Field Index

To determine treatment outcome

Plant in Foundation

VineyardEvaluate Test

Results

California Registered

Material Available

ReadFall

ReadSpring

ReadSummer

Verify ID

Tests neg.

LAB TESTTo determine

treatment outcome. PCR

and ELISA

Grow and

Train Trunk/

Cordons

Growing

APHIS and

CDFA authorize release

Tissue Culture

for virus elimination

Growing

Field Index

To determine treatment outcome

LAB TESTTo determine

treatment outcome. PCR

and ELISA

Plant in Foundation

VineyardEvaluate Test

Results

California Registered

Material Available

ReadFall

ReadSpring

ReadSummer

Verify ID

Tests neg.

Grow and

Train Trunk/

Cordons

Growing

APHIS and

CDFA authorize release

Growing From 4 inch pot to 2 gallon pot; harvest

woody buds for index

Growing From 4 inch pot to 2 gallon pot; harvest

woody buds for index

Visual Inspection

Fall

LAB TESTELISA

Repeated, Spring

LAB TESTELISA

Repeated, Spring,

Visual Inspection

Fall

Visual Inspection

Fall

LAB TESTELISA

Repeated, Spring

LAB TESTELISA

Repeated, Spring,

Visual Inspection

Fall

Tests positive

Tests positive

Tests positive Tests

positive

Mist Propagated

Plants Available

Provisional status

Mist Propagated

Plants Available

Provisional status

Mist Propagated

Plants Available

Provisional status

Mist Propagated

Plants Available

Provisional status

Qualifies for CA Reg. Foundation Stock

Qualifies for CA Reg. Foundation Stock

Page 45: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Distribution of Tested Grape Material

Page 46: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests
Page 47: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

New Russell Ranch Foundation Vineyard

established 2010, Davis California

October, 2012 October, 2015

Page 48: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Qualification of Russell Ranch FoundationVines – Grapevine Disease Testing Protocol 2010

1) Microshoot tip tissue culture therapy

2) Negative test results - long list of pathogens - index,

herbaceous, ELISA and PCR tests (35+)

Page 49: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Qualification of Russell Ranch Foundation

Negative test

results - long list of

pathogens - index,

herbaceous, ELISA

and PCR tests (35+)

* Newly identified viruses continue to be added

Microshoot tip tissue culture therapy required

Page 50: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Russell Ranch Foundation Vineyard

2011

20132012

2014

2015

575 Vines208 selections

569 Vines236 selections

569 Vines314 selections

809 Vines312 selections

693 Vines355 selections

Planted

Page 51: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Russell Ranch Foundation

2010 Protocol selection # indicates source selection #

Ex. Chardonnay 04.1 indicates 2010 Protocol Qualification of TC

treated Chardonnay 04

Most scion selections represented with two field planted vines.

Most rootstock selections represented with 2-12 field planted vines

depending upon popularity.

Availability depends upon vigor of cultivar and development of the vine.

2011 ~ 30#1, 30#2, 20 #1

2012 ~ 15#1, 10#2, 10#3

2013 ~ 5#2, 10#3

2014, 2015 ~ Brush

Page 52: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Available Selections

http://fps.ucdavis.edu/

Page 53: The Pipeline: From tissue culture to your vineyard...California Registered Material Available. Note: The green arrow represents a best case scenario in which a grape introduction tests

Thank you!