http://www.cnr.it/ontology/cnr/individuo/prodotto/ID292091

Effects of different water regimes on berry metabolism and composition of 'Aleatico' grapevine (Contributo in atti di convegno)

Type

Contributo in atti di convegno (Classe)
Prodotto della ricerca (Classe)

Label

Effects of different water regimes on berry metabolism and composition of 'Aleatico' grapevine (Contributo in atti di convegno) (literal)

Anno

2012-01-01T00:00:00+01:00 (literal)

Alternative label

Tuccio L.; Remorini D.; Scalabrelli G.; Agati G.; Tonutti P. (2012)
Effects of different water regimes on berry metabolism and composition of 'Aleatico' grapevine
in 28th International Horticultural Congress, Lisboa, Portugal, August 22-27, 2010
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Tuccio L.; Remorini D.; Scalabrelli G.; Agati G.; Tonutti P. (literal)

Pagina inizio

315 (literal)

Pagina fine

322 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.scopus.com/inward/record.url?eid=2-s2.0-84863614153&partnerID=q2rCbXpz (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume

Proc. XXVIIIth IHC - IS Viti&Climate: Effect of Climate Change on Production and Quality of Grapevines and Their Products (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

931 (literal)

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931 (literal)

Rivista

Acta horticulturae (Rivista)

Note

Scopu (literal)

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Dipartimento di Coltivazione e Difesa Delle Specie Legnose, Università di Pisa, via del Borghetto, 80, 56124 Pisa, Italy; Istituto di Fisica Applicata Nello Carrara, CNR, via Madonna del Piano, 10, 50019 Sesto Fiorentino (Firenze), Italy; Scuola Superiore Sant'Anna, Piazza Martiri della Libertà, 33, 56127 Pisa, Italy (literal)

Titolo

Effects of different water regimes on berry metabolism and composition of 'Aleatico' grapevine (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume

B. Bravdo and H. Medrano (literal)

Abstract

This work reports the results of a trial carried out on 'Aleatico' grapevine, a cultivar cultivated along Tuscany coasts and in Elba Island, from which a typical dessert wine is produced after partial postharvest dehydration of berries. Two different water regimes were applied in the vineyard: not irrigated (water stress, WS) and partially irrigated (moderate water deficit, MWD). WS conditions determined a decrease of stem water potential (SWP) that reached values lower than - 1.4 Mpa, whereas in MWD these SWP levels were registered only for short periods. Significant differences in stomata conductance and net photosynthetic rate values were observed between the two treatments. At harvest, berry weight was reduced of about 20% in WS plants. An effect of similar magnitude was detected for skin weight, while seed weight was not affected. The sugar accumulation process was more pronounced in WS berries and this was paralleled by higher titratable acidity values both at veraison and harvest. Skin anthocyanin content was determined in laboratory and by a fluorimetric method, using the optical sensor Multiplex®2, an innovative portable instrument based on chlorophyll fluorescence, that nondestructively analyzes the berries in the field, under natural light. WS induced a significant increase of anthocyanin biosynthesis as their content resulted to be higher than that of MWD samples. The cultivar 'Aleatico' appeared to be quite tolerant to water stress conditions and this information could be useful also for setting up targeted postharvest dehydration strategies to produce dessert wines. An additional interesting result is represented by the validation of the use of a portable nondestructive instrument to measure skin anthocyanin content directly in the vineyard. (literal)

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