Results 11 to 20 of about 5,780 (251)

High-Throughput Phenotyping of Leaf Discs Infected with Grapevine Downy Mildew Using Shallow Convolutional Neural Networks

Agronomy, 2021
Objective and standardized recording of disease severity in mapping crosses and breeding lines is a crucial step in characterizing resistance traits utilized in breeding programs and to conduct QTL or GWAS studies.
Daniel Zendler, Nagarjun Malagol, Anna Schwandner, Reinhard Töpfer, Ludger Hausmann, Eva Zyprian   +5 more
doaj   +1 more source

Confirmation and Fine Mapping of the Resistance Locus Ren9 from the Grapevine Cultivar ‘Regent’

Plants, 2020
Grapevine (Vitis vinifera ssp. vinifera) is a major fruit crop with high economic importance. Due to its susceptibility towards fungal and oomycete pathogens such as Erysiphe necator and Plasmopara viticola, the causal agents of powdery and downy mildew (
Daniel Zendler, Reinhard Töpfer, Eva Zyprian   +2 more
doaj   +1 more source

Transcriptomic analysis of temporal shifts in berry development between two grapevine cultivars of the Pinot family reveals potential genes controlling ripening time

BMC Plant Biology, 2021
Background Grapevine cultivars of the Pinot family represent clonally propagated mutants with major phenotypic and physiological differences, such as different colour or shifted ripening time, as well as changes in important viticultural traits ...
Jens Theine, Daniela Holtgräwe, Katja Herzog, Florian Schwander, Anna Kicherer, Ludger Hausmann , Prisca Viehöver, Reinhard Töpfer, Bernd Weisshaar   +8 more
doaj   +1 more source

Towards Sensor-Based Phenotyping of Physical Barriers of Grapes to Improve Resilience to Botrytis Bunch Rot

Frontiers in Plant Science, 2022
Botrytis bunch rot is one of the economically most important fungal diseases in viticulture (aside from powdery mildew and downy mildew). So far, no active defense mechanisms and resistance loci against the necrotrophic pathogen are known.
Katja Herzog, Florian Schwander, Hanns-Heinz Kassemeyer, Hanns-Heinz Kassemeyer, Evi Bieler, Markus Dürrenberger, Oliver Trapp, Reinhard Töpfer   +7 more
doaj   +1 more source

Determination of Sugars and Acids in Grape Must Using Miniaturized Near-Infrared Spectroscopy

Sensors, 2023
An automatic determination of grape must ingredients during the harvesting process would support cellar logistics and enables an early termination of the harvest if quality parameters are not met.
Lucie Cornehl, Julius Krause, Xiaorong Zheng, Pascal Gauweiler, Florian Schwander, Reinhard Töpfer, Robin Gruna, Anna Kicherer   +7 more
doaj   +1 more source

Genetic Diversity of Armenian Grapevine (Vitis vinifera L.) Germplasm: Molecular Characterization and Parentage Analysis

Biology, 2021
Armenia is an important country of origin of cultivated Vitis vinifera subsp. vinifera and wild Vitis vinifera subsp. sylvestris and has played a key role in the long history of grape cultivation in the Southern Caucasus.
Kristine Margaryan, Gagik Melyan, Franco Röckel, Reinhard Töpfer, Erika Maul   +4 more
doaj   +1 more source

Wild grapes of Armenia: unexplored source of genetic diversity and disease resistance

Frontiers in Plant Science, 2023
The present study is the first in-depth research evaluating the genetic diversity and potential resistance of Armenian wild grapes utilizing DNA-based markers to understand the genetic signature of this unexplored germplasm.
Kristine Margaryan, Kristine Margaryan, Reinhard Töpfer, Boris Gasparyan, Arsen Arakelyan, Oliver Trapp, Franco Röckel, Erika Maul   +7 more
doaj   +1 more source

The Durability of Quantitative Host Resistance and Variability in Pathogen Virulence in the Interaction Between European Grapevine Cultivars and Plasmopara viticola

Frontiers in Agronomy, 2021
European grapevine, Vitis vinifera, carries no major resistances against Plasmopara viticola, the causal agent of grapevine downy mildew. The introgression of quantitative trait loci conferring resistance to P.
Lisa Heyman, Rebecca Höfle, Anna Kicherer, Oliver Trapp, Essaid Ait Barka, Reinhard Töpfer, Monica Höfte   +6 more
doaj   +1 more source

Deep incorporation of organic amendments into soils of a ‘Calardis Musqué’ vineyard: effects on greenhouse gas emissions, vine vigor, and grape quality

Frontiers in Plant Science, 2023
BackgroundTraditional wine growing regions are increasingly endangered by climatic alterations. One promising approach to mitigate advancing climate change could be an increase of soil organic matter.
Nele Schneider, Muhammad Islam, Ralf Wehrle, Stefan Pätzold, Nicolas Brüggemann, Reinhard Töpfer, Katja Herzog   +6 more
doaj   +1 more source

PROSPECTS OF USING DNA-MARKERS IN GRAPEVINE BREEDING [PDF]

Russian Vine, 2021
DNA-markers are actively used for the fin-gerprinting of genotypes, identification of va-rieties, in phylogenetic studies, for assessing genetic diversity, for mapping genes, etc. The article presents an analytical review of the achievements in the use of molecular markers in grape genetics as a basis for breeding works.
T.D. Kozina, E.T. Ilnitskaya, M.V. Makarkina   +2 more
openaire   +1 more source