Diseases
Fragaria x ananassa Duchesne ex Rozier
A group of fungal and bacterial diseases manifesting as necrotic spots on the leaf blade, petioles, and runners. Includes common leaf spot, leaf spot, and angular leaf spot caused by specific pathogens.
In the reference 141 varieties crop Garden strawberry, where this is mentioned in the description.
Common leaf spot (Marssonina leaf spot) is caused by the fungus Marssonina potentillae and manifests as the formation of purple-brown coalescing spots with characteristic shiny black acervuli on the upper side of the leaf. In the case of white leaf spot, the causal agent of which is Ramularia tulasnei, circular spots with a white center and a purple halo appear, often accompanied by the falling out of the affected tissue. Angular leaf spot is of bacterial origin and is caused by Xanthomonas fragariae.
Breeding for resistance to these pathogens is complicated by the lack of a standardized race classification and clearly defined resistance genes. Unlike other diseases, the evaluation of varieties is based primarily on the results of field screening and phenotypic observations expressed in disease severity scores.
General information about the subject — on the page Leaf spot diseases.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Mr. Jimmy Bagdasarian, Lassen Canyon Nursery, Inc
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Raggi Giordano, Marchetti Enrico, Musacchi Dario, Bernardini Danilo,
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Shahrokh Khanizadeh
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
The Regents of the University of California
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Steven D. Nelson^^^Michael D. Nelson^^^SCHMIDA DANIEL T.
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
UNIVERSITY OF CALIFORNIA WOLFSKILL EXPERIMENTAL ORCHARD
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
UNIVERSITY OF CALIFORNIA WOLFSKILL EXPERIMENTAL ORCHARD
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
UNIV.DE CALIFORNIA
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Steven D. Nelson Michael D. Nelson Leo W. Stoeckle Daniel S. Nelson
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
The Regents of the University of California (US)
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Szkółka Markiewicz Agnieszka Markiewicz-Januszewska
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
SCEA Marionnet
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Prof. T.R. Swinburne c/o Institute of Horticultural Research
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Michelangelo Leis^^^Alessio Martinelli
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Fresh Forward Holding B.V., 6851 ET Huissen
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Vissers International B.V.
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
University of California, Plant Sciences, Davis / University of California, Plant Sciences, Davis
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Stewart Philip J.|Watsonville, CA, US / Madesko Martin P.|Aptos, CA, US / Coss JoAnne F.|Pebble Beach, CA, US / Mowrey Bruce D.|Watsonville, CA, US
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Stephen M. Ackerman, Steven D. Nelson Michael D. Nelson
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Steven D. Nelson^^^Michael D. Nelson^^^Stephen M. Ackerman
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Smith Dan
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Leis Michelangelo/ Castagnoli Gianfranco/ Martinelli Alessio