Great articles, it seems that most (not just French) wines are produced by grafting wines onto a phylloxera (insects that feed on the vines) resistant rootstock. From the gizmodo article:
It's hard to compare modern wine, which is all grown on grafted vines, to pre-phylloxera wines (the notable exceptions being Chilean wine, and wine from the occasional European vineyard that was spared from the blight).
And:
Though modern chemistry and genetics have given agriculture plenty of new tools to fight pests, the ancient practice of grafting, honed during the Great French Wine Blight, remains the method of choice for protecting grape vines. "Rootstocks are the 'cure-all' for many soil-borne pests and diseases, but not all," Walker says. "In the past fumigation and pesticides controlled some of these issues, but if phylloxera are present, rootstocks are essential."
It's hard to compare modern wine, which is all grown on grafted vines, to pre-phylloxera wines (the notable exceptions being Chilean wine, and wine from the occasional European vineyard that was spared from the blight).
And:
Though modern chemistry and genetics have given agriculture plenty of new tools to fight pests, the ancient practice of grafting, honed during the Great French Wine Blight, remains the method of choice for protecting grape vines. "Rootstocks are the 'cure-all' for many soil-borne pests and diseases, but not all," Walker says. "In the past fumigation and pesticides controlled some of these issues, but if phylloxera are present, rootstocks are essential."