terclim by ICS banner
IVES 9 IVES Conference Series 9 Correlation between agronomic performance and resistance gene in PIWi varieties in the field

Correlation between agronomic performance and resistance gene in PIWi varieties in the field

Abstract

Today’s viticulture faces a considerable challenge dealing with fungal diseases and limitations on the use of plant protection products (PPP) have increased the pressure to find more sustainable alternatives. One strategy may be the development and cultivation of disease-resistant grapevine varieties (PIWI) that could maintain crop productivity and quality while reducing dependence on PPP. In this work a set of 9 PIWI varieties (5 white and 4 red) deploying genes for resistance to powdery and downy mildew were evaluated in two consecutive years in Valdegón, La Rioja, with Tempranillo and Viura as controls. The objective was to correlate agronomic performance and disease incidence with the presence of disease resistance genes in two different seasons: with (2023) and without disease pressure (2022).

Results showed that genotypes harbouring more than one resistance gene such as Soreli (Rpv3 + Repv12), S. Rytos (Rpv 3 + Ren3) or Julius (Rpv12 + Ren3), are more resilient to both diseases, regardless of whether both are against the same disease, suggesting a synergistic effect. Moreover, cultivars more resilient to both mildews did not show any reduction in yield, compared to C. Volos that showed a 42,5% reduction, S. Kretos about 50% or controls Viura (62,3%) and Tempranillo (65,5%) in productivity during the disease-pressured season. Further research will focus on the role of rhizospheric microbiome on disease incidence.

 

Acknowledgments: This work has been funded by the Government of La Rioja, (Fortalece 2021/08). Support from the CIDA’s staff and the Plant Resources service of the ICVV is gratefully acknowledged.

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Sara I. Blanco – González, M.M. Hernández*, C.M. Menéndez

Instituto de Ciencias de la Vid y el Vino (ICVV (UR-GR-CSIC)), Finca La Grajera, Carretera de Burgos km 6, 26007, Logroño, La Rioja, Spain

Contact the author*

Keywords

PIWI, powdery mildew, downey mildew, sustainable viticulture, biotic stress

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

NAVIC–20 years of a lean management model for wine business R&D

Considering That Innovation Supports A Company’s Competitive Advantage And Drive Higher Profits (Dogru A. & Peyrette J., 2022), A Key Challenge Of Wine Companies Is Getting Practitioners To Understand That Innovation-Related Wine Research Increases The Likelihood Of Competitive Advantage, Bringing Financial Success. A Continued And Enhanced Investment In Research Is, Thus, A Prerequisite For Commercial Success In Today’s Globalized And Competitive Wine Industry (Høj P., Pretorius I.S., & Day R., 2003).

Stable or dynamic? How phenotypic plasticity could be key to select for grapevine adaptation?

Climate change will require the adaptation of agricultural systems and among the different means of adaptation, changing plant material is a promising strategy. In viticulture, different levels of diversity are currently exploited: clonal and varietal diversity for rootstocks and scions. A huge quantity of research aims to evaluate different genotypes in different environmental conditions to identify which ones are the best adapted and the most tolerant to future environmental conditions.

Carbon footprint in Austrian viticulture – Evaluation of the main polluters and possible solutions in entire the production chain

The sustainability certification ‘nachhaltig austria’ (www.sustainableaustria.com) has been offered to austrian wineries in an online version for 10 years and over 25% of the austrian wine-growing area is now certified. Since the 2022 harvest, ‘nachhaltig austria’ has automatically calculated the carbon footprint for each winery, per hectare of vineyard, per litre of bulk wine and per 0.75-litre bottle (poelz, w. And rosner, f.g. 2023). In last year’s publications and numerous presentations at national and international level, topics such as refilling glass bottles, lightweight glass bottles, renewable energy, … Etc.

Étude de la cinétique de transfert du 2,4,6-trichloroanisole (TCA) entre des bouchons en liège naturel et le vin – premiers résultats

The last step in winemaking is packaging the wines for market placement, while preserving the quality attained during vinification. Since the 1980s, 2,4,6-trichloroanisole (TCA) has been recognised as an incidental and random contaminant of cork, with its migration into wine thought to contribute to ‘cork taint’. This molecule is not a cork component and little is known about how it is formed on trees. Its formation from the chlorine used to wash the cork stoppers, long suspected, has been excluded by the abandonment of chlorine washing.

Measurements of the oxygen dissolved in white wines elaborated in barrels without to open the bung of the barrels

Bases on oxoluminescence, we have developed an innovative device for measuring dissolved oxygen in wines in barrels without opening the bung. This system is directly inserted into the wood during the barrel elaboration and can be positioned at different locations of the barrel (the head, the hull …). During two successive vintages we have used this device notably to follow the oxygen dissolved of whites wines elaborated in barrels. This allowed us initially to monitor the oxygen levels of the harvest to bottling the whole elaboration process in barrels of white wines without using techniques of measurement suitable to modify the real values in wines (opening the bung to plunge an oximeter).