The French teacher and vine grower François Baco (1865-1947) was active in the fight against the phylloxera plague, which had been rampant in France and many other European countries since 1880. He learned professional grafting, i.e. the grafting of European scions onto American rootstocks, from the well-known botanist Lucien Louis Daniel (1865-1940). From the onset of black rot in 1896, he began to breed fungus-resistant hybrids. Baco artificially fertilised 1,200 inflorescences and as a result planted around 50,000 grape seeds on the estate of his friend Jules Darrignan in the municipality of Labatut near Bélus in the south-west of France. After several years of work, he selected around 7,000 from over 50,000 cuttings, of which no more than ten were finally marketed by 1912. He was also supported by his son Maurice.