Suchergebnisse

Trabajo presentado en la Final Conference Progress in Vitis Vinifera diversity evaluation and use, celebrada en Lisboa del 7 al 9 de octubre de 2014.-- Maul, Erika et al. ; Cost action FA1003 - GRAPENET. East-West Collaboration for Grapevine Diversity Exploration and Mobilization of Adaptive Traits for Breeding. ; The Near East and in particular Caucasus region are considered as the cradle of viticulture and the area of domestication. Already in the 1920's Negrul first suggested the Caucasus as the grapevine gene centre. His perception was based on the abundantly thriving wild wines and the enormous morphologic diversity he encountered. Being both gene and domestication centre for grapevine a genetic wealth is highly expected in that area. A survey of the grapevine genetic resources present in Armenia, Azerbaijan, Georgia, Moldova, Russian Federation and Ukraine which took place from 2003 to 2007 in the scope of the project "Conservation and Sustainable Use of Grapevine Genetic Resources in the Caucasus and Northern Black Sea Region" was funded by the government of Luxembourg and managed by Bioversity. The outcome of 5 years intensive collaboration was the estimation that the maintained 2654 accessions may belong to 1283 cultivars. But trueness to type assessment by morphology and genetic fingerprinting still needed to be done. In the scope of COST Action FA1003, 1098 mainly Vitis vinifera accessions and 76 Vitis sylvestris individuals were analyzed by molecular markers. In addition to the six countries mentioned above Albania, Austria, Bulgaria, Croatia, Hungary, Lithuania, Romania, Slovakia and Slovenia participated, too. ; Peer Reviewed

Spanish viticulture possessed great genetic resources which were in danger of extinction, but nowadays they are being recovered and studied through several research programmes. During previous studies carried out in Rioja appellation (MARTÍNEZ DE TODA et al. 2004 ), 76 vine accessions were collected and planted in a germplasm bank in the farm of Rioja's Government, called "La Grajera". 'Tempranillo' is the red variety with higher number of hectares grown in the Iberican Peninsula, in Spain and in Rioja appellation. In the germplasm bank of "La Grajera" there are 14 accessions whose local name includes 'Tempranillo': 'Tempranillo', 'Tempranillo Blanco', 'Tempranillo Royo', 'Tempranillo del Barón' and 'Tempranillo Temprano'. The objective of this work is to identify all these accessions containing the word 'Tempranillo' in the local name. ; Peer Reviewed

'Garnacha Blanca' is a somatic variant derived from 'Garnacha Tinta', an old variety with large genetic and phenotypic variability. In this work we have studied for two years the phenotypic variation existing in 'Garnacha Blanca' for yield and quality related traits in accessions from 14 sampling locations of ancient vineyards in the Ebro Valley, Spain. The results showed high variability among the accessions in many of the traits studied in 'Garnacha Blanca'. Different accessions could be distinguished both years using several traits, including two important traits in terms of quality and yield: bunch compactness and yield per plant. A large environment effect, intrinsic to the 'Garnacha' group, enhances phenotypic variation among years, what requires increasing the number of bunches and years for clonal characterization in this variety. The dimensions of the berry showed the least variability, while traits related to bunch architecture like bunch length were discriminant and also stable. ; This work was funded by Government of Navarra. M. Rodríguez-Lorenzo acknowledges the University of La Rioja for his predoctoral contract