Recognition and genotyping of minor germplasm of Friuli Venezia Giulia revealed high diversity

The wealth of vine varieties that used to exist in Friuli Venezia Giulia has been progressively lost. In order to ascertain the current situation regarding vine germplasm in the region, between 2001 and 2008, a wide-ranging study was conducted of recovery, conservation and molecular characterization with microsatellite markers (SSR) of accessions of minor germplasm at risk of erosion or extinction. A total of 178 accessions were analyzed and 93 varieties identified. Of these, 44 are already registered in the Italian Catalogue, 8 have been imported and are well-known foreign varieties even if not registered in the Italian Catalogue, 38 are potentially autochthonous and of these only 15 are described or at least cited in the literature; there are no hypotheses on the remaining three. In order to obtain information on possible genetic similarities, three types of software were used to process the molecular data, but only Structure allowed the existence of two principal groupings to be hypothesized for some of the presumed Friuli autochthons: one that gravitates around ‘Prosecco’ and the other around ‘Refoscone’.

Genetic and phenetic exploration of Georgian grapevine germplasm

One hundred and forty seven accessions of Georgian grapevine germplasm have been analyzed by phenotypical and genetic markers. Accessions were described according to the IPGRI, GENRES 081, O.I.V., and UPOV united descriptors. Morphometric data were collected both on fruits (bunches, berries, and seeds) and leaves (81 measures per leaf). Chemometric data involved variables of technological maturation and berry skin anthocyanins (total and relative profiling). The six nuclear microsatellite loci, defined and selected in the frame of the GENRES 081 EU project, have been used for genotyping. Statistical data processing by multivariate method evidenced a high degree of genetic diversity. Almost all accessions were defined by a unique genotype. Genetic and phenetic grouping were related to the geographical origin of the varieties

genetic and phenetic exploration of georgian grapevine germplasm

One hundred and forty seven accessions of Georgian grapevine germplasm have been analyzed by phenotypical and genetic markers. Accessions were described according to the IPGRI, GENRES 081, O.I.V., and UPOV united descriptors. Morphometric data were collected both on fruits (bunches, berries, and seeds) and leaves (81 measures per leaf). Chemometric data involved variables of technological maturation and berry skin anthocyanins (total and relative profiling). The six nuclear microsatellite loci, defined and selected in the frame of the GENRES 081 EU project, have been used for genotyping. Statistical data processing by multivariate method evidenced a high degree of genetic diversity. Almost all accessions were defined by a unique genotype. Genetic and phenetic grouping were related to the geographical origin of the varieties