Diseases
Potato leafroll virus
Potato leafroll virus is a dangerous viral disease that causes leaf rolling, tuber flesh necrosis, and a significant reduction in yield. It is transmitted primarily by green peach aphids and infected tubers.
Mentioned in descriptions 1 497 varieties reference book.
Potato leafroll virus manifests through characteristic deformation of leaf blades. In secondary infection transmitted via infected tubers, the lower leaves roll into a 'tube', become stiff and leathery, sometimes acquiring a reddish-purple hue. Primary infection acquired during the current season affects young upper leaves, which point upwards and have a pale green hue; meanwhile, net necrosis of the flesh is frequently recorded in the tubers.
The spread of the disease depends on the activity of vectors, in particular the green peach aphid, as well as weather conditions. Dry and hot weather contributes to more intense visual manifestation of symptoms. The virus persists in infected seed material, which leads to progressive variety degradation and a decrease in crop quality, including a drop in starch content and tuber marketability.
The assessment of variety resistance during variety testing is based on a combination of visual field recording of infected plants and laboratory diagnostic methods, such as ELISA and PCR, which allow for the detection of latent infection. Breeding is aimed at developing field resistance, which limits pathogen accumulation in plant tissues or reduces their attractiveness to insect vectors.
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 tuberosum L. · Potato
Institut für Kartoffelforschung Herrn Horst Beyer / Hans-Georg Zschüttig im Institut für Kartoffelforschung
Solanum tuberosum L. · Potato
University of Pannonia,Potato Research Centre (HU)
Solanum tuberosum L. · Potato
SAKA| SaKa Pflanzenzucht GmbH & Co. KG
Solanum tuberosum L. · Potato
University of Pannonia,Potato Research Centre (HU)
Solanum tuberosum L. · Potato
Station de Recherche du Comité Nord G.I.E.
Solanum tuberosum L. · Potato
MEYER WILHELM| Wilhelm Meyer in Fa. Golden Geest Kartoffel Erzeuger-gesellschaft mbH
Solanum tuberosum L. · Potato
P.BREED.INT.CAMBRIDGE
Solanum tuberosum L. · Potato
BRETAGNE PLANTS INNOVATION S.A.S.
Solanum tuberosum L. · Potato
Pannon Egyetem Georgikon Mezőgazdaságtudományi Kar, Veszprém
Solanum tuberosum L. · Potato
Yosef Fohel`
Solanum tuberosum L. · Potato
Bretagne-Plants S.C.I.C.A.
Solanum tuberosum L. · Potato
Selectiebedrijf Kooi B.V./Fobek B.V./P.K. Rispens
Solanum tuberosum L. · Potato
UNIVERSITY OF GUELPH
Solanum tuberosum L. · Potato
Wolfgang Walter
Solanum tuberosum L. · Potato
Stet Holland B.V./WUR Depart. Plantwetenschap Leerstoel Plantenveredeling
Solanum tuberosum L. · Potato
NORIKA Nordring- Kartoffelzucht- und Ver
Solanum tuberosum L. · Potato
Bavaria Saat GbR
Solanum tuberosum L. · Potato
Niederösterreichische Saatbaugenossenschaft reg.Gen.m.b.H.
Pisum sativum L. · Pea
W BROTHERTON SEED CO INC
Solanum tuberosum L. · Potato
ZUJKOV ANDREJ EVGEN'EVICh / NEZAKONOVA LYuDMILA VASIL'EVNA / DEDYuLYa VERA VLADIMIROVNA / YaShchENKO NINA PETROVNA / RYNDINA ELENA GRIGOR'EVNA / PIShchENKO LYuDMILA IVANOVNA / DOROZhOK ALLA NIKOLAEVNA / SEMENOVA ZOYa ALEKSANDROVNA
Solanum tuberosum L. · Potato
Sarvari Istvan
Solanum tuberosum L. · Potato
UNIPLANTA| Uniplanta - Saatzucht KG
Solanum tuberosum L. · Potato
Stephan Berger
Solanum tuberosum L. · Potato
Fobek B.V., Tuberosum Technologies Inc.