Varietal diversity within grapevine accessions of cv. Tempranillo
2002; Julius Kühn-Institut; Volume: 41; Issue: 1 Linguagem: Inglês
10.5073/vitis.2002.41.33-36
ISSN0042-7500
AutoresM. Cervera, José Antonio Cabezas, I. Rodríguez-Torres, Juan Carlos Neri Chávez, Félix Cabello, José M. Martínez‐Zapater,
Tópico(s)Plant pathogens and resistance mechanisms
ResumoIntra-varietal diversity of 31 accessions named as Tempranillo or described as synonyms of this representative Spanish grapevine variety was assessed using 48 morphological descriptors and 95 AFLP markers obtained using 2 primer combinations. We could identify homonyms as well as accessions belonging to varieties which, depending on their regional origin, are incorrectly cited as Tempranillo synonyms. Genetic analysis revealed a high level of genetic similarity between Tempranillo accessions (SG >0.97), which could correspond to three highly related genotypes. This narrow genetic variation supports a monophyletic origin of Tempranillo, and could be the result of rapid multiplication and distribution of a very low number of clones.
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