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United States Department of Agriculture

Agricultural Research Service

Title: Evaluation of Native Strawberry Germplasm for Resistence to Anthracnose

Authors
item Smith, Barbara
item Hokanson, S - UNIV OF MINNESOTA
item Lewers, Kimberly
item Hancock, J - MICHIGAN STATE UNIV
item Maas, John
item Serce, S - MICHIGAN STATE UNIV

Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: November 13, 2003
Publication Date: December 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

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.

Last Modified: 8/22/2014
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