Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: 11/13/2003
Publication Date: 12/1/2003
Citation: Smith, B.J., Hokanson, S.C., Lewers, K.S., Hancock, J.F., Maas, J.L., Serce, S. 2003. Evaluation of native strawberry germplasm for resistence to anthracnose. Phytopathology. 93:S79-S80 Interpretive Summary:
Technical Abstract: Anthracnose diseases of strawberry are caused by several <i>Colletotrichum</i> species. A subset ("supercore") of the <i>Fragaria</i> core collection maintained at the USDA National Clonal Repository, Corvallis, OR, contains an elite group of 15 native <i>F. virginiana</i> clones and 12 <i>F. chiloensis</i> clones of widely differing genotypes. We evaluated this supercore collection for anthracnose resistance by inoculating plants with conidial suspensions of isolates of <i>C. acutatum, C. fragariae</i> and <i>C. gloeosporioides</i>. No <i>Fragaria</i> sub-grouping was more resistant than any other. Individual accessions within groups were identified as sources of resistance. The virulence of <i>Colletotrichum</i> isolates varied depending on the <i>Fragaria</i> accession challenged. Apparent resistance to anthracnose in accessions from different geographic origins, Peru, British Columbia, California, Montana and Mississippi, and in two <i>Fragaria</i> species, suggests there is a wealth of genetic resources in native octoploid germplasm that can be used to develop resistant cultivars.