Search results for "Vitis vinifera"

showing 10 items of 135 documents

Effetti delle modificazioni del microclima dei grappoli mediante sfogliatura e copertura con rete ombreggiante sulla qualità dell'uva della cv Pinot …

2007

Settore AGR/03 - Arboricoltura Generale E Coltivazioni Arboreevitis vinifera defogliazione esposizione
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Dimensione degli acini e caratteristiche qualitative della cv Syrah

2010

Sono stati studiati nell’ambito della variabilità naturale riscontrata in un vigneto della cv Syrah, gli effetti della dimensione degli acini e dell’esposizione dei grappoli sui componenti dell’acino e sulla qualità dell’uva. Da entrambe le pareti della chioma (est ed ovest) sono stati pesati gli acini di 45 grappoli suddivisi in tre repliche in modo da determinare quattro classi di diverso peso (1. inferiore o uguale a 1,5 g; 2. tra 1,51 e 2,00 g; 3. tra 2,01 e 2,50 g; 4. maggiore di 2,50 g). Il rapporto peso buccia/peso acino non è variato all’aumentare della dimensione degli acini mentre è variato il rapporto peso semi/peso acino. Gli antociani totali sono stati determinati per via spett…

Settore AGR/03 - Arboricoltura Generale E Coltivazioni Arboreevitis vinifera dimensione acini antociani
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Effetti della dimensione degli acini sui parametri qualitativi nella cv Cabernet Sauvignon

2010

Settore AGR/03 - Arboricoltura Generale E Coltivazioni Arboreevitis vinifera variabilità dimensione degli acini
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Studio delle popolazioni di aspergilli e penicilli in uve della sicilia occidentale

2008

In diversi vigneti della Sicilia occidentale è stata monitorata, su uve sane e infestate, la dinamica di presenza di specie di Aspergillus e Penicillium, alcune delle quali note produttrici di ocratossina A, la principale micotossina della filiera vitivinicola. Gli studi condotti dall’allegagione alla raccolta evidenziano la variabilità quali-quantitativa delle popolazioni di aspergilli e penicilli, in relazione alle condizioni ambientali. Le analisi tossicologiche, accertando la presenza occasionale della micotossina, confermano l’assenza di correlazione tra il livelli di OTA nelle uve e la presenza dei funghi in vigneto.

Settore AGR/12 - Patologia VegetaleVitis vinifera funghi ocratossinogeni SiciliaAspergillus Penicillium Ocratossina A funghi micotossigeni
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Detection of Bacterial Endophytes in Vitis vinifera L. and Antibiotic Activity against Grapevine Fungal Pathogens

2016

This chapter presents the results of studies conducted to (i) detect and localize endophytic bacteria in symptomless and symptomatic leaf tissues of grapevine (Vitis vinifera) using fluorescence in situ hybridization (FISH) in combination with confocal laser scanning microscopy (CLSM); and (ii) test the antagonistic activity of Bacillus amyloliquefaciens AG1, previously isolated from grape wood affected by the esca syndrome, against grapevine fungal pathogens: Alternaria alternata, obtained from grapevine leaves showing necrotic concentric spots; Aspergillus carbonarius, A. ochraceus and Penicillium verrucosum, isolated from grapes affected by secondary rot; Botrytis cinerea, isolated from …

Settore AGR/12 - Patologia Vegetalebacterial endophytes detection vitis viniferaSettore AGR/16 - Microbiologia Agraria
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Status and prospects of systems biology in grapevine research

2019

The cultivated grapevine, Vitis vinifera L., has gathered a vast amount of omics data throughout the last two decades, driving the imperative use of computational resources for its analysis and integration. Molecular systems biology arises from this need allowing to model and predict the emergence of phenotypes or responses in biological systems. Beyond single omics networks, integrative approaches associate the molecular components of an organism and combine them into higher order networks to model dynamic behaviors. Application of network-based methods in multi-omics data is providing additional resources to address important questions regarding grapevine fruit quality and composition. He…

Settore BIO/11 - BIOLOGIA MOLECOLAREMulti-omicsExploitComputer scienceSystems biologyIntegrative analysisMolecular systemsRegulatory networkData scienceOmics dataMulti omicsGene co-expressionVitis viniferaOrganism
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Effetto della cultivar e del regime colturale sulla risposta spettrale della chioma in Vitis vinifera L.

2008

Lo studio consente di caratterizzare le risposte spettrali all’invaiatura di chioma ed acino di alcune cultivar a bacca nera della piattaforma ampelografica siciliana. La variabilità tra le risposte spettrali delle foglie all’interno della stessa chioma, nonché le variazioni spettrali anche al variare del regime irriguo consentono di effettuare un’analisi comparativa delle cultivar. In questo quadro, le firme spettrali integrano la descrizione ampelografica di chioma e bacche che caratterizza la Vitis Vinifera L.. Infine l’applicazione su un’area pilota di tecniche di classificazione di immagini remote basate sulle caratteristiche spettrali delle cultivar, consente di valutarne le performan…

Spectral signatures classification accuracy Vitis Vinifera L
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Impact of Plasmopara viticola on starch metabolism and stomachal functions in grapevine leaves

2011

The grapevine downy mildew affects leaves and young berries and can affect the harvest quality and quantity. The causal agent is the obligate biotroph oomycete Plasmopara viticola that induces severe physiological alterations in infected leaves. One is the abnormal accumulation of starch in oil spots, the characteristic symptoms of the disease. Another is a deregulation of stomatal movements. Stomata, natural openings on the leaf surface allowing gas exchanges between the plant and the atmosphere, stay abnormally open during the night and do no longer close upon water stress or ABA treatment in infected leaves. This thesis is divided into two chapters that aim to i) explain the origin and m…

SucresPlasmopara viticola[SDV.SA] Life Sciences [q-bio]/Agricultural sciencesStomatesVitis viniferaStarchInvertaseApoplastic fluidsSugarsAmidonStomataFluides apoplastiques
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Evolution of the grapevine (Vitis viniferaL.) imprinted by natural and human factorsThis review is one of a selection of papers presented at the symp…

2007

This paper is concerned with vegetative reproduction, which is the only mode of propagation in cultivated grapevines. After a brief summary of the systematics of the Vitaceae the question of the nomenclature of cultivated grapevines is discussed. Intra-varietal variability is discussed using morphological and molecular characteristics. The origins of variation are presented: mutations, foreign nucleic acids, and memory of previous environmental conditions. Grapevines provide characteristic products, leading viticulturalists to make selections among the diversity observed in the vineyard, thus decreasing diversity. Grapevines interact with various environmental agents. One example, the natur…

SystematicsbiologyVegetative reproductionBotanyPlant ScienceVitis viniferaVitaceaebiology.organism_classificationSelection (genetic algorithm)Canadian Journal of Botany
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Cover crops and pruning in Bobal and Tempranillo vineyards have little influence on grapevine nutrition

2016

ABSTRACT Cover crops may improve vineyard soil properties, grapevine nutrient status and berry composition, however, factors such as cover crop type, annual rainfall, climate and irrigation may change their effects on vineyards. From 2008 to 2011, the effects of a non-permanent cover crop and two pruning techniques on soil as well as vine nutrients and grapevine performance of two vineyards (cv. Tempranillo and cv. Bobal) were evaluated. For that purpose, two legumes were sown in inter-rows of hand-pruned vines in February and were tilled at flowering. Soil tillage, or cover cropping, was combined with either light pruning or severe pruning to study foliar nutrient variations. Soil N, P, K …

VineIrrigationSoil organic matterlegumes04 agricultural and veterinary sciencesBiologylcsh:S1-972Vineyard040501 horticultureVeraisonsoil macronutrientsAgronomyfoliar macronutrientsVitis viniferaSoil water040103 agronomy & agriculture0401 agriculture forestry and fisheriesAnimal Science and Zoologylcsh:Agriculture (General)0405 other agricultural sciencesCover cropAgronomy and Crop SciencePruning
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