Spring phenology and bud fruitfulness of a grapevine segregating population (Rhine Riesling × Cabernet-Sauvignon)
The rise of average temperatures worldwide influences grapevine (Vitis vinifera L.) phenology by accelerating its development, starting from anticipated budbreak dates.
Wine chemical profiling of genotypes obtained from crosses involving Croatian native grapevine germplasm
One of the goals of the breeding program launched at the Faculty of Agriculture in Zagreb is to create new varieties resistant to fungal diseases suitable for growing in Croatian wine regions.
High-throughput CNN-based phenotyping of grape berry heat stress as an objective indicator of sunburn sensitivity
Ongoing climate change poses increasing challenges for viticulture, as higher temperatures, more frequent heat extremes, and intensified ultraviolet (UV) radiation expose grapevines to severe abiotic stress conditions.
Next‑generation genome editing and breeding genomics in Vitis vinifera and Malus × domestica
The accelerating effects of climate change on perennial crops demand transformative approaches in plant biotechnology, particularly for grapevine (Vitis vinifera), a species historically constrained by limited genetic improvement and low transformation efficiency.
The use of mutagenesis to generate variation: A case study in Pinot gris
Genetic variation is the cornerstone of plant breeding. In traditional grapevine cultivars, intra-varietal diversity has declined due to decades of selection for elite genotypes, shifting breeding goals,
Varietal differences in berry biometrics, skin structure, and wax biosynthesis of red grapevine varieties: A two-year study
Climate change poses a major threat to vitiviniculture, particularly in Mediterranean regions, where increasing temperatures and drought events are reshaping berry development and composition.
Multi-omics – enabled next-generation breeding in native American muscadine grapes: translational genomics for improved fruit quality and stress resilience
Native American muscadine grape (Muscadinia rotundifolia) represents a strategically important reservoir of allelic diversity for grape improvement.
Severe infestations of Daktulosphaeria vitifoliae on the hybrid rootstock 1103 Paulsen in Apulia Region (Italy)
In the last four years, despite repeated fertilization and irrigation applications from the farmer, a progressive vegetative decline and yield decrease have been observed in a large (5 ha) 10-year-old table grapes vineyard of the cv. Autumn Pearl grafted on 1103 Paulsen and located nearby the Ionian Sea in Taranto province (Apulia, Italy).
Biological control of root phylloxera by Metarhizium brunneum–student projects at the Winecampus Neustadt
The potential use of Metarhizium brunneum to control root phylloxera was tested on potted vines in the green house in studentical projects at the Winecampus Neustadt. In 2023 Metarhizium was applied by inoculated barley and by suspension variant in single pot experiments on 5 BB rootstock vines artificially infested by root phylloxera.
Hot water treatment combined with Trichoderma inoculation protects planting material in the nursery against grapevine trunk disease
Grapevine trunk diseases (GTDs), caused by a group of fungal pathogens including Phaeomoniella chlamydospora, Phaeoacremonium minimum, and Diplodia seriata, pose a serious threat to grapevine cultivation worldwide.
Assessment of the first spring wandering of asexual grapevine phylloxera hibernating on rootstock roots in vineyards–pilot monitoring in Austria
Grapevine phylloxera (Daktulosphaira vitifoliae Fitch), controlled by grafting, has re-emerged due to climate change, with shorter hibernation phases, earlier hatching and migrating of hibernales towards the leaves of the vines, and increased reproduction cycles within one season.
Update of the PHYLLI international database for grape phylloxera: aims and challenges
The International Phylloxera Genotype Database “PHYLLI” which is supported by the 2014 ISHS Phylloxera group describes Grape Phylloxera (Daktulosphaira vitifoliae) genotypes, which are genotyped by seven SSR markers (Dvit6, DVSSR4, DV4, DV8, Phy_III_36, Phy_III_55, Phy_III_30). The samples are standardised by single founder lineages, that are equally biotyped.
Soluble solids change in the grapevine phylloxera infested Muscaris vines under different watering conditions
What happens in the vines that simultaneously experience both abiotic and biotic stress factors? Here, we have set up an experiment in a greenhouse with Muscaris, a PIWI cultivar, to determine its response in terms of non-structural carbohydrates.
Genomic analysis of the phylloxera resistance locus Rdv1 of the rootstock variety ‘Börner’
Resistance to phylloxera (Daktulosphaira vitifoliae) is the most important trait in grapevine rootstock breeding. Up to now, there are eight quantitative trait loci (QTL) described mediating resistance on roots or leaves. In order to understand the genetic basis of one of these genetic loci, the genome of the resistance donor ‘Börner’ was sequenced and the genomic region of the Rdv1 locus analyzed.
Dissecting the role of rootstock in drought adaptation: from breeding to agronomic perspectives
The response of grapevine to drought is a complex trait that involves several morphological adaptations and physiological pathways. In modern viticulture, this response is mediated by the rootstock genotype, which can induce tolerance rather than susceptibility to the scion.
Back to the roots–direct producers as the future of viticulture?
Until the second half of the nineteenth century, viticulture in Europe was free from phylloxera (Daktulosphaira vitifoliae) and grapevines were cultivated on their own roots. With the introduction of phylloxera in 1863, viticulture came under severe pressure as the pest eradicated more than 2.5 million hectares of viticultural area.
Genetic resources for breeding phylloxera-resistant rootstocks
Grape phylloxera (Daktulosphaira vitifoliae Fitch) is a major insect pest that has had devastating effects in grape-growing regions worldwide. As a result, using phylloxera-resistant rootstocks is a key component of modern vineyard management.
Arbuscular mycorrhizal fungi as a sustainable approach to improve grapevine fitness in a changing climate
Increasing pressures from both biotic and abiotic stresses threaten grapevine health and vineyard productivity worldwide. Arbuscular mycorrhizal fungi (AMF) inoculants have been shown to offer a promising bio-based alternative to mitigate abiotic stress and pathogen attack by enhancing nutrient uptake, water relations, and plant defence mechanisms.
Uncovering the genomic diversity of global grapevine rootstocks
Rootstocks continue to serve as the first line of defence against phylloxera in viticulture; however, to mitigate the impacts of climate change, future viticulture will require novel, improved rootstock varieties. As conventional rootstock breeding is extremely time-consuming, modern genomics-assisted approaches are urgently needed.
Modernizing grapevine rootstock breeding at UC Davis: strategies, tools, and early outcomes
Soil salinity is an increasingly critical challenge for grapevine production, particularly in Mediterranean climates like California. Chloride (Cl-) accumulation, in particular, severely impacts vine growth, productivity, and fruit quality.