Beginning in the mid-Iron Age (around 500 BCE), researchers found seeds with identical or highly similar DNA, suggesting French winemakers shifted to cloning by cuttings and propagated grape groves genetically preserved over time.

A Nature Communications study analyzed ancient grape seeds dating back to about 2,000 BCE, using 54 archaeological samples—mostly from France with some from Ibiza—to trace European grapevine breeding and domestication over millennia.

Whole-genome sequencing indicates that humans began using both wild and domesticated grapevines roughly 2,400 to 2,800 years ago, signaling early reliance on vegetative propagation to maintain desirable traits.

Experts stress that wine emerges from a combination of biology and culture, and ongoing research will continue to illuminate history without overinterpreting genetic data.

The enduring popularity of Pinot Noir highlights genetic stability through cloning and deep cultural appreciation, illustrating a biocultural evolution of wine in France.

While DNA can reveal traits such as sugar content and grape size, wine flavor cannot be inferred directly from DNA because taste relies on grape variety, fermentation, growing conditions, and additives.

Among Medieval clones, at least one sample was genetically identical to Pinot Noir, suggesting the variety has persisted as a clone for around six centuries since the 15th century.

A medieval Valenciennes sample was identical to modern Pinot Noir, implying the lineage has continued since the 15th–16th centuries, maintaining continuity of this grape type over centuries.

The authors note that certain grapevine lineages persisted for centuries through clonal propagation, linking Iron Age and Medieval viticulture to the development of modern wine varieties.