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…

Use of UHPH to improve the implantation of non-Saccharomyces yeasts

Ultra High-Pressure Homogenization (UHPH) is a high-pressure pumping at 300 MPa (>200 MPa) with a subsequent depressurization against a highly resistant valve made of tungsten carbide covered by ceramic materials or carbon nanoparticles. The intense impact and shear efforts produce the nano-fragmentation of colloidal biopolymers including the elimination of microorganism (pasteurization or sterilization depending on in-valve temperature) and the inactivation of enzymes.

The adaptative capacity of a viticultural area (Valle Telesina, Southern Italy) to climate changes

The viticulture aiming at the production of high quality wine is very important for the landscape conservation, because it allows to combine high farmer income with soil conservation

Generation of functional chitosan derivatives to better understanding the antiseptic effect on Brettanomyces bruxellensis in wine

The addition of fungal chitosan in wine is allowed since 2009 to release some spoilage microorganisms such as Brettanomyces bruxellensis (OIV/OENO 338A/2009; EC 53/2011). This yeast is able to produce volatil phenols and is responsible of organoleptic deviations compromising quality and typicality of red wines [1]. Despite the fact that fungal chitosan is highly renewable, no toxic and non-allergenic, its use remains marginal because this treatment is relatively recent (compare to sulphites treatment) and information are contradictory between different studies described in literature. For all these reasons,

Application of a fluorescence-based method to evaluate the ripening process and quality of Pinot Blanc grape

The chemical composition of grape berries at harvest is one of the most important factors that should be considered to produce high quality wines. Among the different chemical classes which characterize the grape juice, the polyphenolic compound, such as flavonoids, contribute to the final taste and color of wines. Recently, an innovative non-destructive method, based on chlorophyll fluorescence, was developed to estimate the phenolic maturity of red grape varieties through the evaluation of anthocyanins accumulated in the berry skin. To date, only few data are available about the application of this method on white grape varieties.

EFFECT OF DIFFERENT TEMPERATURE AND WATER-LOSS DEHYDRATION CONDITIONS ON THE PATTERN OF FREE AND GLYCOSYLATED VOLATILE METABOLITES OF ITALIAN RED GRAPES

Post-harvest grape berries dehydration/withering are worldwide applied to produce high-quality sweet and dry wines (e.i., Vin Santo, Tokaji, Amarone della Valpolicella). Temperature and water loss impact grape metabolism [1] and are key variables in modulating the production of grape compounds of oenological interest, such as Volatile Organic Compounds (VOCs), secondary metabolites responsible for the aroma of the final wine.
The aim of this research was to assess the impact of post-harvest dehydration on free and glycosylated VOCs of two Italian red wine grapes, namely Nebbiolo and Aleatico, dehydrated in tunnel under controlled condition (varied temperature and weight-loss, at constant humidity and air flow). From these grapes Sforzato di Valtellina Passito DOCG and Elba Aleatico Passito DOCG, respectively.