Terroir 1996 banner
IVES 9 IVES Conference Series 9 Balearic varieties of grapevine: study of genetic variability in the response to water stress

Balearic varieties of grapevine: study of genetic variability in the response to water stress

Abstract

The photosynthetic characteristics of twenty varieties of grapevine (Vitis vinifera L.) from Mallorca (Balearic Islands, Spain) and two widespread varieties, Cabernet Sauvignon and Chardonnay were studied under irrigation as well as in response to drought. Despite of the common origin of these cultivars, high variability was found for several photosynthetic characteristics under irrigation.
Interestingly, these variations were significant in gas-exchange parameters (net CO2 assimilation, stomatal conductance and intrinsic water use efficiency). Some varieties presented high carbon assimilation at high water loses’ expense, whereas others were water-saving even under irrigation, which was accompanied by low CO2 assimilation. Escursach was found to be an interesting variety, presenting high carbon assimilation at time with low water consume.These varieties also showed different responses to drought, which allowed to classify them in two main groups: “alarmist” varieties, which showed strong reductions of stomatal conductance in response to relatively low decreases of leaf water potential, and “luxurious” water consume varieties, showing low reductions of stomatal conductance under water stress.

Download the PDF

DOI:

Publication date: February 24, 2022

Issue: Terroir 2000

Type: Article

Authors

J. BOTA, J. FLEXAS, B. SAMPOL, H. MEDRANO

Institut Mediterrani d’Estudis Avançats (CSICU​IB). Departament de Biologia Ambiental, Universitat de les Illes Balears. Carr. Valldemosa, Km. 7,5; 07071 Palma de Mallorca. Spain

Tags

IVES Conference Series | Terroir 2000

Citation

Related articles…

Ultra-High Pressure Homogenization (UHPH): a technique that allows the reduction of SO2 in winemaking

Ultra-High Pressure Homogenization (UHPH) is an innovative, efficient and non-thermal technology that can be applied at different stages in winemaking in order to reduce or avoid the use of sulphites. During 2022 vintage, a batch of Xarel·lo must was processed by UHPH at 300 MPa with an inlet temperature (Ti) of 4 ºC. In order to verify the influence of the UHPH treatment in wine characteristics, alcoholic fermentations with this must (UHPH) were carried out and compared with a control batch (without SO2 addition (C)) and a sulphited batch, in which 60 mg/L of total SO2 (SO2) were added.

Read More

Caratteristiche fisico-chimiche dei suoli coltivati a vite e loro influenza nella diffusione del mal dell’esca

Il mal dell’esca é una malattia della vite della quale sono state studiate sintomatologia, eziologia, patogenesi ed epidemiologia. Essendo una malattia che colpisce soprattutto la parte epigea delle piante, le caratteristiche dei suoli non sono mai state considerate fra le responsabili della sua insorgenza e diffusione.

Read More

PyExpress – A pipeline for fast and reliable UAV image processing in vineyards

Increasing drought poses a challenge to viticulture, with complex impacts on grape yield and quality. The use of Unmanned Aerial Vehicles (UAV) in Precision Viticulture offers a valuable tool to detect drought stress, capturing its spatio-temporal variability and thus, supports management strategies.

Read More

Comparison of destructive and non-destructive measurements of table grape berries to assess quality parameters using spectroscopy

The quality of table grapes is critically influenced by several parameters, including sugar content, acidity, firmness, and overall appearance.

Read More

Assessing bunch architecture for grapevine yield forecasting by image analysis

It is fundamental for wineries to know the potential yield of their vineyards as soon as possible for future planning of winery logistics. As such, non-invasive image-based methods are being investigated for early yield prediction. Many of these techniques have limitations that make it difficult to implement for practical use commercially. The aim of this study was to assess whether yield can be estimated using images taken in-field with a smartphone at different phenological stages. The accuracy of the method for predicting bunch weight at different phenological stages was assessed for seven different varieties.

Read More