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Grape Variety: Malvasia Preta

Variety Name Malvasia Preta
Common Synonyms Mureto
All Synonyms Moreto, Moreto do Dão, Negro-Mouro
Countries of Origin Portugal
Species Vitis vinifera
References
Berry Color Black
Uses Wine
Comments This variety is a black grape cultivar that originated in northern Portugal. The Vitis International Variety Catalogue at Geilweilerhof, Germany, shows an entry for a cultivar with the prime name Mureto (synonym Malvasia Preta), as well as a separate entry for Malvasia Preta as the prime name (synonym Moreto). The cultivar with prime name Mureto (syn. Malvasia Preta) is a product of a cross between Alfrocheiro and Jaén blanco (Cayetana blanca). The name Malvasia has been used as a varietal name for many cultivars and as a reference to a special taste or aromatic flavor for a grape cultivar. Lacombe T. et al. 2007. Relationships and Genetic Diversity within the Accessions Related to Malvasia Held in the Domaine de Vassal Grape Germplasm Repository, Am.J.Enol.Vitic. 58:1. Although Moreto is used as a synonym for Malvasia Preta in some areas, Moreto is a common name used as a synonym and prime name for several different grapes in Portugal.

Malvasia Preta Selections

Information about:          Selection Numbers     |     Registration Status
  Malvasia Preta 01
Registration Status Registered Registered is the ultimate status in the California Department of Food & Agricultures Grapevine Registration & Certification Program. Registered selections have successfully completed all disease testing required by the regulations. Registered selections have also been confirmed as true to variety by experts using visual observations, DNA-based testing or both.
Protocol 2010 Qualifies for Protocol 2010.
Source Portugal
Treatments Heat treatment 62 days (1982); microshoot tip tissue culture therapy (2007)
Comments Malvasia Preta 01 was imported to Davis in 1981 by Dr. Harold Olmo from Cockburn Co., Tua (Douro) Oporto, Portugal. The original material underwent heat treatment for 62 days but eventually tested positive for leafroll and Rupestris stem pitting viruses. New plants were then created in 2007 using microshoot tip tissue culture disease elimination therapy. Malvasia Preta 01 successfully completed testing in 2011 and was planted in the Classic Foundation Vineyard.

Malvasia Preta is a black Portuguese grape cultivar. The name Malvasia has been used as a varietal name for many cultivars, as a reference to a special taste or aromatic flavor for a grape cultivar. Lacombe T. et al. 2007. Relationships and Genetic Diversity within the Accessions Related to Malvasia Held in the Domaine de Vassal Grape Germplasm Repository, Am.J.Enol.Vitic. 58:1. The Vitis International Variety Catalogue at Geilweilerhof, Germany, shows an entry for a cultivar with the prime name Mureto (synonym Malvasia Preta), as well as a separate entry for Malvasia Preta as the prime name (synonym Moreto). The cultivar with prime name Mureto (syn. Malvasia Preta) is a product of a cross between Alfrocheiro and Jaén blanco (Cayetana blanca). The DNA profile for the Malvasia Preta FPS 01 is consistent with the profile of the Mureto accession (synonym Malvasia Preta) in the collection at Domaine de Vassal Grape Germplasm Repository in France.