Mandarin-like Hybrids of Recent interest for Fresh Consumption. Problems and Ways of Control. (FAO) Cita: "The first examples of citrus breeding programmes are found in Italy at the end of the XIX century when very strong infections of Phytophtora Spp destroyed all trees of orange (Citrus sinensis L. Osbeck), lemon (C. limon L Burm. f.) and mandarin (C. deliciosa Ten.), which at that time were propagated by seed, and in Florida when a frost caused huge damages to the citrus industry."
faostat.fao.org
«FAO». Archivado desde el original el 13 de julio de 2011. Consultado el 17 de junio de 2011.
