The sagrantino bianco

White Sagrantino is one of the most recent results obtained by our research and tasing team.

White Sagrantino is an authentic individual that owns the same Sagrantino’s DNA as we know today, but his berries are white.

The result has been obtained making dominant a latent character present in red Sagrantino using self-pollination which is the most common and largely used method to build new varieties.
Despite including human intervention this method has nothing to do with molecular genetics and gene transfers. Unlike the vegetative genetic improvement that exploits the character’s heterogeneity that show up after natural or artificial bud mutation, sexual reproduction is characterised by a genetic recombination. We chose different isolated and self-pollinated plants in old vineyards of Sagrantino. We obtained some bunches from which we got the seeds then planted in an experimental field. After a first selection, we chose 250 genotypes subsequently propagated through vegetative reproduction, among these last there were white, grey and obviously red Sagrantino.  

This research allowed us to discover Sagrantino’s genetic characters both dominant and latent (among which also the white berries). At the beginning, when we discovered white grapes we thought not having isolated sufficiently the self-pollinated plants from other pollens. On the contrary, DNA exams confirmed it was Sagrantino: a white Sagrantino from a phenotypic point of view but red from the genotypic point of view. It is likely that in Sagrantino’s genealogy once existed a white Sagrantino , which had been abandoned because of its recessive character.
The experiment is part of a long job we’ve been carrying out to discover all Sagrantino’s qualities from its genetic variability to all the characteristics inherent this variety. This research that also aims to select the best clones and wants to discover the genetic origin of this vine.
This job will have an important spin off on the cultural field. The data gathered will allow to detect and to rebuild the presence or not of relationships between Sagrantino and other grape varieties through DNA analysis and comparative genetics.

From the productive point of view the very first white Sagrantino’s grape harvest happened in 2006 in 10 hectars of experimental vineyards.

The grapes subjected to analysis will enable us to establish if they have the characteristics to be worked and to be converted into a new kind of wine: the white Montefalco’s Sagrantino.