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Nomenclature of Tokyo cherry (Cerasus × yedoensis 'Somei-yoshino', Rosaceae) and allied interspecific hybrids based on recent advances in population genetics

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The flowering cherries, Cerasus (≡Prunus subg. Cerasus; Rosaceae), including C. × yedoensis 'Somei-yoshino', are popular ornamental trees in temperate regions of the world. Recent advances in molecular and population genetics have revealed that this group originated as an interspecific hybrid. We used these findings and the verification of type specimens to examine the nomenclature of nothotaxa including C. × yedoensis. Four nothotaxa, C. × yedoensis, C. × nudiflora , C. × sacra and C. × kashioensis, were confirmed to be hybrids resulting from crosses between C. itosakura and taxa of the C. serrulata complex (C. speciosa, C. sargentii, C. jamasakura and C. leveilleana, respectively). In addition, the hybrids found on Jeju Island are C. × nudiflora, a new combination for an interspecific hybrid shown to be genetically distinct from C. × yedoensis. A new nothospecies, C. × kashioensis is proposed for a hybrid between C. itosakura and C. leveilleana.
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Keywords: CULTIVAR; GENETIC MARKER; NOTHOSPECIES; TYPE DESIGNATION

Document Type: Research Article

Affiliations: 1: Tama Forest Science Garden, Forestry and Forest Products Research Institute, National Research and Development Agency, Todori 1833-81, Hachioji, Tokyo 193-0843, Japan;, Email: [email protected] 2: NARO Institute of Fruit Tree Science, National Agriculture and Food Research Organization, 2-1 Fujimoto, Tsukuba, Ibaraki 305-8605, Japan, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan

Publication date: 2016-12-01

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