Plantiac liquids that can be obtained from the roots of the liquorice plant ("Glycyrrhiza glabra", Dutch "zoethoutwortel"). Whereas so-called eau-de-vie (or other grape-based extracts) is sometimes used during the production of Dutch Brandy, this does not happen when Plantiac is made. It contains 35% alcohol. The brown colour of Plantiac is obtained using caramel. It is not certain when Plantiac was first made. Although advertisements insist on a 100-year anniversary in 1970 this is not true. Plantiac was first produced as Plantinga Cognac by the Plantinga distillery in Bolsward, Netherlands, most likely in the 1930s or 1940s. The 100-year anniversary seems
Selection methods in plant breeding based on mode of reproduction species where normal mode of seed set is through a high degree of cross-pollination have characteristic reproductive features and population structure. Existence of self-sterility, self-incompatibility, imperfect flowers, and mechanical obstructions make the plant dependent upon foreign pollen for normal seed set. Each plant receives a blend of pollen from a large number of individuals each having different genotypes. Such populations are characterized by a high degree of heterozygosity with tremendous free and potential genetic variation, which is maintained in a steady state by free gene flow among individuals within the populations. In the development of hybrid varieties, the aim is