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…

Effect of climate and soil on phenology and ripening of Vitis vinifera cv Touriga acional in the Dão region

“Terroir” has been acknowledged as an important factor in wine quality
and style. It can be defined as an interaction between climate, soil, vine (cultivar, rootstock) and human
factors such as viticultural and enological techniques. Soil and climate are the two components of the “Terroir” with an important role on the vine development and berries ripening. The present study is focused on the effects of the weather conditions and the soil characteristics on the phenological and berries ripening dynamics of the “Touriga Nacional” in Dão region.

Utility of leaf removal timing and irrigation amounts on grape berry flavonoids under climate change

Context and purpose of the study – The dormant and growing season temperatures in California USA have been increasing with more clear sky days. A consequence increasing temperatures and clear sky days is water deficit conditions. Viticulturists must determine appropriate balances of canopy management and irrigation budgeting to produce suitable yields without compromising berry chemistry. In response, a study designed to test the interactive effects of leaf removal timing and applied water amounts on Cabernet Sauvignon/110R in Napa Valley, CA.

Ecodesign tools and approaches in viticulture for professionals and learners, contributions of the Vitarbae project

The agro-ecological transition in winegrowing can benefit from the environmental assessment of practices to inform producers’ technical choices. life cycle assessment (lca) evaluates the environmental impact of a product over its entire life cycle. this paper takes a look at the tools available for the detailed assessment and eco-design of winegrowing practices, their uses and developments in the vitarbae research project (2023-2026). this project aims to establish and equip support and training courses for the agroecological transition in viticulture and fruit arboriculture.

Longevity and moderate wine consumption – can guidelines provide practical advice?

Conflicting messages about the consumption of alcoholic beverages – including wine – continue to dominate the media, causing increasing uncertainty among consumers and health professionals.

Does treatment of grape juice with aspergillopepsin-i influence wine aroma?

Acid aspergillopepsins-i (ap-i) have been suggested for use in winemaking due to their ability to degrade proteins, which reduces haze formation and the necessity for bentonite to achieve protein stability. These endopeptidases cleave non-terminal amino acid bonds of proteins, resulting in their degradation.