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
PLANT BREEDING INTERNATIONAL CAMBRIDGE
Solanum tuberosum L. · Potato
VOGEL JOSEF| Dr. Josef Vogel
Solanum tuberosum L. · Potato
NORIKA NORDRING-KARTOFFELZUCHT UND VERMEHRUNGS-GMBH
Solanum tuberosum L. · Potato
Kweekbedrijf-Zpc (NL)
Solanum tuberosum L. · Potato
Jan van Loon
Solanum tuberosum L. · Potato
Wolfgang Walter, Norika Nordring - Kartoffelzucht - und Vermehrungs - GmbH Gross Lusewitz
Solanum tuberosum L. · Potato
Heinrich Böhm
Solanum tuberosum L. · Potato
Heinrich BOHM, DE
Solanum tuberosum L. · Potato
John Mara
Solanum tuberosum L. · Potato
M HIGGINS LTD
Solanum tuberosum L. · Potato
TPC Research BV
Solanum tuberosum L. · Potato
REITZIG| Dorlies Reitzig
Solanum tuberosum L. · Potato
JEAN MARC ABHIVEN_
Solanum tuberosum L. · Potato
FRIESE MIG V.LANDBOU.
Solanum tuberosum L. · Potato
Robert W. Hoopes
Solanum tuberosum L. · Potato
Bavaria Saat GbR
Solanum tuberosum L. · Potato
Winfried Lange, Frank Lange
Solanum tuberosum L. · Potato
Wolfgang Walter
Solanum tuberosum L. · Potato
Wolfgang Walter, Norika Nordring - Kartoffelzucht - und Vermehrungs - GmbH Gross Lusewitz
Solanum tuberosum L. · Potato
SAKA PFLANZENZUCHT GMBH AND CO KG
Solanum tuberosum L. · Potato
Station Recherche du Comité Nord (GIE)
Solanum tuberosum L. · Potato
University of Idaho, Office of Technology Transfer
Solanum tuberosum L. · Potato
JOACHIM TJADEN
Solanum tuberosum L. · Potato
VEREINIGTE SAATZUCHTEN (DE)