terclim by ICS banner
IVES 9 IVES Conference Series 9 PIWIs’ variation in drought response under semi-controlled conditions 

PIWIs’ variation in drought response under semi-controlled conditions 

Abstract

Grapevine interspecific hybrids (PIWIs, from German “pilzwiderstandsfähige Rebsorten” meaning fungus tolerant grapevine cultivars), offer a promising alternative to traditional cultivars in many wine regions due to their tolerance to certain fungal diseases. This makes them a potential solution for sustainable wine production, particularly under organic systems. Despite extensive research on certain agronomic traits and susceptibility to biotic diseases, such as powdery and downy mildews, the response of these cultivars to abiotic stressors, such as drought, remains unclear. Our study aims to investigate the eco-physiological traits of two commercial PIWI cultivars, Muscaris and Souvignier gris, at the leaf level to evaluate their response to drought stress. We conducted a two-year experiment on potted plants under semi-controlled conditions to eliminate the potential effects of environmental factors. The results of stomatal conductance indicate that Souvignier gris consumes more water than Muscaris. However, under well-watered conditions, Muscaris vines deplete soil water faster and exhibit lower stomatal conductance values than Souvignier gris. Further research is required to address remaining questions about PIWIs’ response to drought, including investigating variations in leaf area or anatomy.

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Lea Linhart1*, Jacopo Innocenti1, Philipp Klumpp1, Astrid Forneck1, José Carlos Herrera1

1 University of Natural Resources and Life Sciences Vienna (BOKU), Institute of Viticulture and Pomology, Department of Crop Sciences, Konrad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria

Contact the author*

Keywords

grapevine, PIWIs, abiotic stress, drought response, eco-physiology

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Formation And Evolution Of Minty Terpenoids During Model Ageing Of Cabernet Franc And Merlot Wines

In recent years, a pool of terpenoids possibly implicated in minty odours and in the appreciable refreshing sensation, has been identified in long aged red Bordeaux wines (Lisanti et al., 2021, Picard et al., 2016; Picard et al., 2017). These compounds were found to play a key role in the so-called “ageing bouquet”, that can be defined as “the homogeneous, harmonious flavour resulting from the complex transformation process in wine during bottle storage” (Picard et al., 2015). Moreover the minty-fresh sensory dimension in fine aged red wines plays an important role in typicity judgement by wine professionals (Picard et al., 2015).

Legal and economic evolution of the Japanese wine industry in the 21st century

Historically bounded by strict regulations with a focus on taxation since the 19th century, the japanese wine industry stands at a crossroads in the 21st century, necessitated by alignment with international standards and opening towards global markets.

Data integration via modeling for adaptation to climate change and efficiency breeding in grapevine

Climate can greatly affect grape yield and quality (van Leeuwen et al., 2024). Growing suitable cultivars in a given region and or breed environmental resilient cultivars are essential for maintaining viticulture sustainability, particularly in the face of climate change (Wolkovich et al., 2018).

Using NIR/SWIR hyperspectral camera mounted on a UAV to assess grapevine water status in a variably irrigated vineyard

Vineyards face climate change, increasing temperatures, and drought affecting vine water status. Water deficit affects plant physiology and can ultimately decrease yield and grape quality when it is not well managed. Monitoring vine water status and irrigation can help growers better manage their vineyards.

Studio per la caratterizzazione delle produzioni vitivinicole dell’area del Barbera d’Asti DOC

Il Barbera rappresenta sicuramente uno dei più importanti vitigni autoctoni del Piemonte occu­pando circa il 50% della superficie vitata regionale. Esso è ancora diffuso su un’area molto vasta, che si estende per oltre 200.000 ha, dando origine a diverse produzioni vinicole tutelate da denominazioni d’origine.