Format: ORAL

Valry Malcot

Institut de Recherches en Horticulture et Semences (IRHS), L'Institut Agro Rennes-Angers, Angers, France

Like done in any plant group, classification and naming are key process to spoke about cultivated plants. The same tools as those used for wild taxa can be used to reconstruct history of cultivated plants, but tools coming from genetics (whether population genetics, genetic diversity or heredity) may also be used to sort out genealogical links. Most of the questions raised by cultivated plants are on the bridge between genetics and phylogeny and have consequences on classificatory and naming process. Using various genera (such as Rosa, Cytisus), we will show how adding cultivated taxa in taxonomic studies can enlarge some aspects of taxonomic studies. The taxonomic and breeding histories need to be assessed before trying to classify and name some groups in these genera. Various techniques and process can be used to sort out these taxonomic and breeding histories, from purely historical ones to molecular ones. When such histories are reconstructed, in between inter-individual genealogies and inter-specific phylogenies, classification process can be applied in order to delimit pertinent taxa, and may question taxa proposed while using wild plants only. In the same way, naming these taxa may need the exact same rules as for wild taxa, but may also rely on rules from the cultivated plant Code, or even other rules. Such situations, intermediate between wild and cultivated, requiring approaches from different disciplines, are common, may be particularly relevant when questioning the naturalness of some individual plants.