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What a difference a clone makes to wine

10 Nov, 2009 02:37 PM
"Clonal trials" may sound like science fiction but in reality they are an increasingly important part of Australia’s fine wine industry.

According to Wine Australia, winemakers and viticulturists are embracing the new grapevine options.

It says each clone has distinctive traits, in much the same way as a cherry tomato is different from a roma or beefsteak.

According to Wine Australia's e-magazine, Kim Chalmers, director of Chalmers Wines, says that Australian vineyard sites have a wide range of regional variation in aspect, elevation, climate and soil conditions, meaning there are potentially a multitude of varieties or clones which could be perfectly matched to those sites to create unique and complex wines.

However, Wine Australia reports that such a process is not a quick business as Australia’s quarantine rules mean it can take 10 years from sourcing new material to producing the first crop.

And limitations in clonal variation have frustrated those wanting to achieve the best results.

But Wine Australia reports that things have changed in recent years thanks to the commitment of a number of nurseries and a new range of clones that is bringing great results and a massive jump in quality.

Chalmers Nurseries imported 70 new Mediterranean varieties and clones in 1998 and over the next decade collected more than a million cuttings and propagated 700,000 grafted vines from them.

"Our commitment to experimentation and innovation is central to the Australian wine industry being able to maintain and regain markets as well as forge new ones in the years to come," Mr Chalmber said.

Nick Dry, viticulturist with Yalumba Nursery, is just as enthusiastic, and believes the importation of the Chardonnay and Pinot Noir 'Bernard' clones from a program in Burgundy was a key to the development of these grape varieties in Australia.

"These clones were selected based on quality rather than yield and we are finding that their use has greatly enhanced wine quality and allowed our winemakers to more readily achieve the wine styles they aspire to create, both at the mainstream and fine wine levels," he said.

"Since 2004 Yalumba Nursery has imported another 30 selections from Burgundy and we believe that each of these new clones has the potential to enhance wine quality, particularly with varieties where clonal diversity is currently limited such as Cabernet Sauvignon, Merlot, Tempranillo and Pinot Gris."

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