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…

Insights from selected ion flow tube mass spectrometry (SIFT-MS) and chemometrics applied to the quick discrimination of grapevine varieties

Selected Ion Flow Tube Mass Spectrometry (SIFT-MS) is an innovative analytical method based on soft chemical ionization to analyze thecomposition in volatile compounds of a gas phase

High resolution remote sensing for mapping intra-block vine vigour heterogeneity

In vineyard management, the block is considered today as the technical work unit. However, considerable variability can exist inside a block with regard to physiological parameters, such as vigour, particularly because of soil heterogeneity. To represent this variability spatially, many measurements have to be taken, which is costly in both time and money. High resolution remote sensing appears to be an efficient tool for mapping intra-block heterogeneity.

Gestión de la mitigación por las empresas vitivinícolas: combinar sostenibilidad y rentabilidad

The transition to a decarbonized economy requires companies to adopt mitigation measures. The wine sector is one of the most affected by climate change and, therefore, interested in its mitigation. The question is how this process develops. To address this, we build on a previous study [1], which identified different types of Spanish wineries based on their sustainability approach.

Residual copper quantification on grapevine’s organs

Copper is listed among the active substances candidates for substitution (Regulation EU 2015/408). Yet still, because of the lack of valid alternatives, the European Commission recently confirmed its usage authorization by limiting the maximum amount to 28 Kg per hectare in 7 years, i.e. an average of 4 kg/year (Reg. EU 2018/1981).This restriction is due to copper accumulation in soils and surface waters both caused by a steady application, especially on perennial crops (Riepert et al., 2013). The aim of this work is to determine if treatments with reduced copper dosages are able to reach different grapevine’s organs, with particular focus on the core of bunches, and if these small amounts can ensure the respect of the legislative prescription, without compromising the phytosanitary conditions of the vineyards, thus grape yields.

Solid Rectified Concentrated grape Must (SRCM) in sparkling wines production: studying the sensory impact of an innovative sugar substrate

The production of sparkling wines requires sugars for the second fermentation. The Solid Rectified Concentrated Must (SRCM) is a water free crystalline form of grape sugar, offering a purer, more stable, and easier-to-use alternative to the liquid Rectified Concentrated Must (RCM).