Our project aims to address the persistent issue of magnesium (Mg) deficiency in vineyards, which hampers the quality potential of domestic wines. Specifically, we focus on Welschriesling (WR), an important grape variety for Austrian viticulture that is particularly affected by Mg deficiency. The problem is most prevalent in regions with sufficient precipitation and light soils, where Mg is easily leached out, leaving reduced availability for the vines. It is crucial to optimize the uptake and metabolism of Mg in the vines to mitigate this issue.
While suitable rootstock options exist with efficient Mg uptake capabilities, the choices are less favorable when it comes to the scion. Currently available WR clones in domestic viticulture exhibit suboptimal Mg uptake. Therefore, our project aims to identify genotypes that demonstrate improved Mg uptake and explore the genetic basis of this trait. By doing so, we can develop valuable biomarkers that enable the selection of WR clones based on their efficiency in Mg uptake. This would facilitate differentiation between efficient and inefficient clones, contributing to more targeted vineyard management practices.
The discovery and development of new Mg-efficient clones would not only benefit domestic vine nurseries and viticulture but also enable the supply of high-quality vine material to neighboring countries such as Hungary, Croatia, Slovenia, and Slovakia, where the Mg deficiency issue is also prevalent. This would provide a competitive advantage for domestic planting material companies and foster collaboration within the wine industry across borders.
Through our project, we aim to enhance vineyard productivity, improve wine quality, and strengthen the overall sustainability of viticulture in the region. By focusing on Mg uptake and identifying the responsible genes, we strive to contribute to the growth and success of the domestic wine sector while fostering international partnerships for a shared solution to the Mg deficiency challenge.
