An $18.7 million programme is aiming to introduce genetic diversity to New Zealand's sauvignon blanc grapevines.
The Bragato Research Institute is partnering with New Zealand Winegrowers, more than 20 wine companies and the NZ Viticulture Nursery Association on the seven-year programme.
Agriculture Minister Damien O'Connor the vines were based on one clone which presented some risk.
"Developing improved, commercially-available variants of this grape variety will also act as an industry insurance policy against future risks from pests, disease and changing markets.