Terroir 1996 banner
IVES 9 IVES Conference Series 9 Valutazione comparativa di cloni di Pinot nero per la produzione di vini base spumante in alcuni ambienti del Piemonte

Valutazione comparativa di cloni di Pinot nero per la produzione di vini base spumante in alcuni ambienti del Piemonte

Abstract

[English version below]

Un vasto programma si riferisce alla verifica di 28 selezioni clonali di Pinot nero atte a vini base spumante. Gli impianti sono stati realizzati in diversi ambienti delle Langhe e del Monferrato nel periodo 1992-1996, in 57 vigneti diversi e su una superficie complessiva di circa 50 Ha. In ogni vigneto si è seguito uno schema sperimentale a blocchi randomizzati con densità di circa 4000 piante/Ha, sistema di allevamento assurgente in controspalliera e potatura a guyot. Nel presente lavoro si inizia a presentare i risultati relativi ai primi sette vigneti impiantati e ad 8 selezioni clonali di Pinot nero limitatamente ai parametri délia produzione nel triennio 1995-97.
Gli aspetti più significativi derivati dallo studio sono stati i seguenti:
– l’annata, intesa soprattutto come andamento climatico, ha esercitato un effetto molto importante sulla produzione di uva e sul peso del grappolo;
– Tra i vigneti considerati (siti) sono state riscontrate ampie differenze; quanto più un ambiente si è dimostrato favorevole, tanto più importanti sono state le produzioni delle diverse selezioni di Pinot nero e viceversa.
– Nell ‘ambito delle selezioni clonali si sono distiniti tre gruppi di cloni sulla base délia loro produttività: alta (cloni 292, 236, 375 e 459), media (clone 52) ed inferiore alla media (cloni 521 e 386)
– E verificata l’alternanza produttiva del Pinot nero negli anni e la sua elevata reattività ai siti ed alle condizioni climatico-ambientali.

A wide program has been build up in order to verify 28 Pinot noir clonal selections for high quality sparkling wines. 57 experimental vineyards have been planted over the period 1992-96 in diversified environments of Langhe and Monferrato for a total surface of about 50 Ha.
In every vineyard a randomized scheme was adopted with a density of about 4000 plants/ha, with low training system and Guyot pruning. The result related in this paper are about the yield of the first 7 vineyards and of 8 Pinot noir clonal selections, in the period 1995-1997. The most significant results are:
– The year, mainly as climatic conditions, proved an important effect on grape production and bunch weight
– Wide differences have been verified among the experimental vineyards (sites); as more an environment has been demonstrated favorable, so much the productions of the different Pinot noir’s selections have been important and vice versa.
– Three groups of clones have been found out on the base of the productivity: high (clones 292, 236, 375, 459), medium (clone 52) and lower of the average (clones 521 and 386).
– The Pinot noir yield variability over the years and his high reactivity to the climatic and environmental conditions have been verified.

DOI:

Publication date: March 2, 2022

Issue: Terroir 1998

Type: Article

Authors

CORINO L., MALERBA G., SANDRI P.

lstituto Sperimentale perla Viticoltura , C.so Alfieri,177- 14100 Asti

Tags

IVES Conference Series | Terroir 1998

Citation

Related articles…

High-resolution climate modelling for the Cognac region under climate change

Climate change has varied effects across French vineyards, with marked regional differences in temperature shifts. Fine-scale studies highlight significant local climate variability, emphasizing the need for precise regional characterization to adapt vineyard management at the regional scale.

Understanding graft union formation by using metabolomic and transcriptomic approaches during the first days after grafting in grapevine

Since the arrival of Phyloxera (Daktulosphaira vitifolia) in Europe at the end of the 19th century, grafting has become essential to cultivate Vitis vinifera. Today, grafting provides not only resistance to this aphid, but it used to adapt the cultivars according to the type of soil, environment, or grape production requirements by using a panel of rootstocks. As part of vineyard decline, it is often mentioned the importance of producing quality grafted grapevine to improve vineyard longevity, but, to our knowledge, no study has been able to demonstrate that grafting has a role in this context. However, some scion/rootstock combinations are considered as incompatible due to poor graft union formation and subsequently high plant mortality soon after grafting. In a context of climate change where the creation of new cultivars and rootstocks is at the centre of research, the ability of new cultivars to be grafted is therefore essential. The early identification of graft incompatibility could allow the selection of non-viable plants before planting and would have a beneficial impact on research and development in the nursery sector. For this reason, our studies have focused on the identification of metabolic and transcriptomic markers of poor grafting success during the first days/week after grafting; we have identified some correlations between some specialized metabolites, especially stilbenes, and grafting success, as well as an accumulation of some amino acids in the incompatible combination. The study of the metabolome and the transcriptome allowed us to understand and characterise the processes involved during graft union formation.

Acetaldehyde-induced condensation products in red wines affect the precipitation of salivary proteins. Will this impact astringency?

Acetaldehyde is a common component of wine. It is already formed during the fermentation being an intermediate in the production of ethanol. Moreover, it can derive from the oxidation of ethanol during the wine production and aging. In wine, concentrations of acetaldehyde range from 30 to 130 mg/L. Acetaldehyde in wine can react with many compounds such as SO2, amino acids and

Foliar application of urea improved the nitrogen composition of Chenin grapes

The nitrogen composition of the grapes directly affects the developments of alcoholic fermentation and influences the final aromatic composition of the wines. The aim of this study was to determine the effect and efficiency of foliar applications of urea on the nitrogen composition of grapes. This study was carried out during 2023 vintage and in the Chenin vineyard located in Estacion Experimental Mendoza (Argentina). Three urea concentrations 3, 6 and 9 Kg N/ha (C1, C2, and C3, respectively) and control (T) were applied in this vineyard at veraison.

Typicité et terroir : importance relative du type de sol et du niveau de maturité dans la typologie sensorielle du vin

Le lien fonctionnel entre typicité et terroir a été étudié en prenant en compte deux dimensions importantes : le type de sol et la date de vendanges. Ces deux facteurs sont, à des degrés divers