Diseases
Viral mosaic diseases are a group of systemic infectious plant diseases manifesting in variegated leaf coloration, tissue deformation, and reduced productivity. These diseases are caused by various pathogens, spread by pests and through contact, and are virtually untreatable.
Mentioned in descriptions 22 022 varieties reference book.
Viral mosaic diseases are characterized by the appearance of alternating spots of different colors on plant organs, including light rings, star-shaped spots, or stripes. In addition to specific variegated coloration, affected plants often exhibit leaf blade curling, wrinkling, and crinkling, as well as stunted overall growth and deformation of fruits and flowers. Sometimes the infection is latent, where visual symptoms are absent, yet crop productivity is significantly reduced.
Pathogen dissemination occurs through vectors such as aphids, true bugs, mites, and nematodes, as well as through mechanical transfer of sap from diseased plants during care, pruning, or physical contact. Infection is possible via seeds, planting material, soil, and crop residues. The intensity of infection development depends on weather conditions, particularly temperature regimes, and crop density, which facilitates rapid virus transmission.
Varietal resistance to mosaics is determined by the presence of specific or recessive genes affecting translation initiation. During breeding and variety testing, resistance is evaluated under artificial inoculation on infectious disease plots. Modern diagnostics for controlling viral load include enzyme-linked immunosorbent assay (ELISA) and polymerase chain reaction (PCR), while field resistance is determined by a variety's ability to not accumulate the pathogen throughout the growing season.
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Solanum lycopersicum L. · Tomato
Vilmorin, F
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.^^^Asahi Industries Co. Ltd.
Solanum lycopersicum L. · Tomato
SYNGENTA SEEDS B.V.
Solanum lycopersicum L. · Tomato
HEINZSEED
Pisum sativum L. · Pea
SEMO a.s
Capsicum annuum L. · Bell pepper
Terry Bacon
Triticum aestivum L. · Bread wheat
Limagrain UK
Solanum lycopersicum L. · Tomato
HEINZSEED
Solanum tuberosum L. · Potato
Lab. De Phys. Veget., Barberet Et Ducloux Et Cie
Solanum tuberosum L. · Potato
Yorh Ehhers
Solanum tuberosum L. · Potato
Svalof Weibull AB
Alstroemeria L. · Alstroemeria
van Zanten Plants b.v
Solanum tuberosum L. · Potato
SOLTAU| Raiffeisen Centralheide eG
Solanum tuberosum L. · Potato
Heinrich Böhm
Solanum tuberosum L. · Potato
Justus Bohm
Alstroemeria L. · Alstroemeria
van Zanten Plants b.v
Hordeum vulgare L. · Barley
ULRICH and JOSEF BREUN
Hordeum vulgare L. · Barley
Nordic Seed A-S, DK
Hordeum vulgare L. · Barley
Lochow-Petkus GmbH (DE)
Hordeum vulgare L. · Barley
NORDSAAT Saatzuchtgesellschaft mbH - Zuchtstation Gudow - Herrn Dr. Eberhard Laubach
Phaseolus vulgaris L. · Common bean
VEGETABLE MONSANTO B.V.
Pisum sativum L. · Pea
Van Waveren Saaten GmbH
Solanum tuberosum L. · Potato
R. L. J. MANSHOLT
Alstroemeria L. · Alstroemeria
van Zanten Plants b.v