Nomenclatural standards for the spring oat cultivars (Avena sativa L.) developed in the Urals and Siberia

Background. According to the International Code of Nomenclature for Cultivated Plants (ICNCP), a cultivar is regarded as documented when its nomenclatural standard has been formalized and published. This procedure attaches a cultivar name to a herbarium specimen, and makes it possible to refer to such specimens when the taxonomic affiliation of a cultivar is being disputed. It also helps to maintain a national catalogue of crops and protect breeders’ rights.

Materials and methods. The nomenclatural standards are presented, along with morphological, biological, ecological and agronomic descriptions, for spring oat cvs. ‘Uralets’ and ‘Kross’ released by the Ural Research Institute of Agriculture, as well as those of collective authorship: ‘Blits’ (with Perm Federal Research Center) and ‘Ural 2’ (with the Siberian Research Institute of Feed). The herbarium material for nomenclatural standards was collected in the fields of Pushkin and Pavlovsk Laboratories of VIR. All specimens of one cultivar are the plants grown from a single seed sample. Each herbarium sheet contains the entire plant in the state of milky ripeness, as well as mature spikes and grains.

Results and conclusion. The nomenclatural standards for the four spring oat cultivars were formatted in line with the ICNCP recommendations and registered in the VIR Herbarium Database. The items are deposited in the Herbarium of Cultivated Plants of the World, Their Wild Relatives and Weeds (WIR), and are made part of the collections of the National Center for Plant Genetic Resources. The nomenclatural standard of each cultivar is presented on one herbarium sheet and has three duplicate sheets, except for cv. ‘Blits’ with its four duplicate standards.

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