Search results for "Vitis"

Integrated Bayesian Approaches Shed Light on the Dissemination Routes of the Eurasian Grapevine Germplasm

2021

The domestication and spreading of grapevine as well as the gene flow history had been described in many studies. We used a high-quality 7k SNP dataset of 1,038 Eurasian grape varieties with unique profiles to assess the population genetic diversity, structure, and relatedness, and to infer the most likely migration events. Comparisons of putative scenarios of gene flow throughout Europe from Caucasus helped to fit the more reliable migration routes around the Mediterranean Basin. Approximate Bayesian computation (ABC) approach made possible to provide a response to several questions so far remaining unsolved. Firstly, the assessment of genetic diversity and population structure within a we…

Prime indagini sulle micorrize della vite in Sicilia

2008

Il Mal dell'esca della vite in Sicilia

2010

THE BIOGEOCHEMICAL BEHAVIOUR OF RARE EARTH ELEMENTS AS A CONSEQUENCE OF PROCESSES OCCURING IN THE VITIS VINIFERA L. – SOIL SYSTEM

2014

The geochemical behaviour of lanthanides and yttrium (Rare Earth Elements, REE) has been investigated mainly in geological systems as the REE exploitation in industrial and agricultural practices is progressively growing in the last years, to such an extent to become strategic materials. Extensive researches evidenced that REE capability to investigate processes occurring at the interface between different media such as the in depth investigation of REE behaviour is a matter of fact in many geochemical studies. These capabilities are a consequence of the chemical characters of REE that are exploited to investigate processes occurring during migrations of chemical elements in the soil-to-pla…

Sull'interazione tra Acremonium sp., Vitis vinifera e Plasmopara viticola.

2002

Alterazioni del legno della vite: prime osservazioni in areali della Sicilia occidentale.

2008

Il comportamento epidemico di “malattie del legno” di Vitis vinifera è stato studiato in tre aree viticole della Sicilia occidentale. In particolare, sono stati condotti rilievi in campo per quantificare l’incidenza e l’intensità di sintomi del mal dell’esca e di un deperimento “atipico”; in laboratorio, invece, sono stati effettuati isolamenti per individuare i microrganismi associati ai campioni di xilema alterato. I risultati delle osservazioni, confermano la “fluttuazione” dei sintomi, la differente evoluzione dell’esca in funzione della cultivar e del clima, definendo, inoltre, la natura biotica del deperimento atipico rilevato a Marsala (TP) e quella abiotica delle alterazioni xilemat…

Indagine sulla dinamica di presenza delle popolazioni di aspergilli e penicilli in vigneti della Sicilia occidentale

2008

Effects of different yeast strains, nutrients and glutathione-rich inactivated yeast addition on the aroma characteristics of Catarratto wines

2021

Catarratto is one of the most common non-aromatic white grape varieties cultivated in Sicily (Southern Italy). In order to improve the aromatic expression of Catarratto wines a trial was undertaken to investigate the effect of yeast strain, nutrition and reduced glutathione. Variables included two Saccharomyces cerevisiae strains, an oenological strain (GR1) and one isolated from honey by-products (SPF52), three different nutrition regimes (Stimula Sauvignon Blanc™ (SS), Stimula Chardonnay™ (SC) and classic nutrition practice), and a specific inactivated yeast rich in reduced glutathione to prevent oxidative processes [Glutastar™ (GIY)] ensuing in ten treatments (T1-T10). Microbiological an…

The role of olfaction in the elaboration and use of the Chardonnay wine concept

2005

The existence of a Chardonnay wine concept was explored in two experiments. In the first experiment, 28 Chardonnay wine experts assessed in terms of a score the degree of representativeness of 48 white wines according to their own Chardonnay wine concept. The samples were 29 wines made from Chardonnay grapes and 19 wines made from other grape varieties (Aligote, Melon de Bourgogne, Sylvaner, Sauvignon blanc, Chenin, Marsanne and Pinot blanc). Two assessment conditions were conducted: orthonasal and global (orthonasal plus retronasal and mouthfeel perceptions). Globally, scores were higher for Chardonnay wines than for non-Chardonnay ones and the consensus among experts demonstrated the exis…

Analysis of non-Saccharomyces yeast populations isolated from grape musts from Sicily (Italy).

2008

Aims The aim of this study was to identify the non-Saccharomyces yeast populations present in the grape must microflora from wineries from different areas around the island of Sicily. Methods and results Yeasts identification was conducted on 2575 colonies isolated from six musts, characterized using Wallerstein Laboratory (WL) nutrient agar, restriction analysis of the amplified 5.8S-internal transcribed spacer region and restriction profiles of amplified 26S rDNA. In those colonies, we identified 11 different yeast species originating from wine musts from two different geographical areas of the island of Sicily. Conclusions We isolated non-Saccharomyces yeasts and described the microflora…