Want to be natural? Harvest from wild vines, says grape geneticist

3rd July, 2014 by Patrick Schmitt

Grape geneticist José Vouillamoz has rubbished an idea that growing vines from seed would bring any benefits, and said that if producers really want to be natural they should harvest grapes from wild vines.

grape vine cuttings

Grape varieties are propagated by cuttings

Responding to an idea from Etna-based Frank Cornelissen that vines grown from seed would prove more disease resistant, Vouillamoz told the producer that seed-grown vines would actually be less resistant to disease.

He also said that if Cornelissen really wanted to be natural, he “should go into the forests and harvest sylvestris”.

Cornelissen, speaking during May’s MW symposium in Florence, said he had planted an “experimental vineyard” on the slopes of Etna containing vines grown only from seeds.

Explaining his decision to start this trial, Cornelissen said he was hoping “to breed varieties that will resist attacks from new diseases”.

But Vouillamoz, who was also a speaker at the MW symposium, was quick to point out that such an approach would in fact yield the opposite effect – vines that were more vulnerable.

“I have a concern with this,” he began. “Seeds are the result of fertilization, so if they were from a Nerello Mascalese vine, then it would change identity, it wouldn’t be Nerello Mascalese anymore.”

Continuing he said, “But it [reproduction] is mainly the result of self-fertilisation, so the result is even less resistant, and very prone to diseases.”

Vouillamoz added that he had already shared his views with well-known Californian winemaker Randall Grahm, who is also growing vines from seed for his Bonny Doon estate.

However, Vouillamoz said that the aim of Grahm’s trial was different: he wants to use the seed-grown vines as rootstocks, because they root more vertically than those from cuttings – and deep-rooting young vines are less reliant on irrigation.

Summing up, Vouillamoz stated, “Growing vines from seed does not make sense.”

“Grape varieties are not natural, they are man made, all of them.”

Turning to Cornelissen, he said, “If you want to be natural then go into a forest and harvest sylvestris,” referring to the wild vine: Vitis vinifera subsp sylvestris.

Three-Js-seated31

Left to right: José Vouillamoz, Julia Harding MW and Jancis Robison MW wrote Wine Grapes, published last year. Source: winegrapes.org

Earlier that same day, Vouillamoz had explained the origin of today’s grapes varieties, pointing out that they had all been selected from vines for particular traits, and then propagated by cutting, which produced clones.

“That’s why there are only 5-6000 grape varieties in the world, we could have many more,” he said.

He also told attendees of the MW symposium that the older the grape cultivar, the larger the number of clones.

Considering an example of the process, he said that propagating Pinot Noir by cuttings or layering “immortalizes the variety in its genetic state because you are just making copies: it doesn’t go through pollination or sexual reproduction.”

To emphasise his point, he joked, “Pinot has not had sex for 2,000 years.”

2 Responses to “Want to be natural? Harvest from wild vines, says grape geneticist”

  1. Chris Scott says:

    While I’m not the best person to argue with José Vouillamoz. I would say that every time a grape is formed Pinot Noir has ..got it lucky so to speak. Its just sadly they where all too delicious to plant.

Leave a Reply

Your email address will not be published. Required fields are marked *

Please note that comments are subject to our posting guidelines in accordance with the Defamation Act 2013. Posts containing swear words, discrimination, offensive language and libellous or defamatory comments will not be approved.

Subscribe to our newsletters

ViVAS Wine - Category Development Manager

ViVAS
Harlow and Stowmarket or Salisbury, UK

Fine Wine Logistics Coordinator

IG Wines
London, GB

Brand Ambassador East Coast USA - Ableforth’s

Maverick Drinks
New York - field-based, USA

Brand Ambassador West Coast USA - Ableforth’s

Maverick Drinks
San Francisco / Los Angeles - field-based, USA

Global Travel Retail Manager

Maverick Drinks
London, UK

Portfolio Ambassador - Europe

Maverick Drinks
North West Europe - field-based, UK

Senior Partner Manager - Grocery

Maverick Drinks
London/Field Based, UK

Sales Executive

Woolf Sung Ltd
London

Trade Marketing Manager - Maverick Drinks

Maverick Drinks
London / Kent

Business Development Executive Central London

William Grant & Sons UK
London

Almaviva 2015 Vintage and Vertical Tasting

London,United Kingdom
28th Sep 2017

TFWA World Exhibition & Conference

Cannes,France
1st Oct 2017

Franciacorta London Festival

London,United Kingdom
2nd Oct 2017
Click to view more

Global Chardonnay Masters 2017

Deadline : 29th September 2017

The Global Riesling Masters 2017

Deadline : 29th September 2017

Click to view more

Champagne Masters 2017

The only Champagne blind tasting in the UK, the competition will reward the best wines in the following categories:

The Global Rosé Masters 2017

With wines from the palest of pink to almost ruby red, bone dry to almost cloyingly sweet, reductively handled to barrel-aged, as well as gently spritzy to fully sparkling.

Click to view more