Full TGIF Record # 112353
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DOI:10.1094/PD-90-0951
Web URL(s):http://apsjournals.apsnet.org/doi/pdf/10.1094/PD-90-0951
    Last checked: 01/07/2008
    Requires: PDF Reader
Publication Type:
i
Refereed
Author(s):Chang, S. W.; Chang, T. H.; Tredway, L.; Jung, G.
Author Affiliation:Chang, Chang, and Jung: Department of Plant Pathology, University of Wisconsin, Madison, Wisconson; Tredway: Department of Plant Pathology, North Carolina State University, Raleigh, North Carolina
Title:Aggressiveness of Typhula ishikariensis isolates to cultivars of bentgrass species (Agrostis spp.) under controlled environment conditions
Section:Research
Other records with the "Research" Section
Source:Plant Disease. Vol. 90, No. 7, July 2006, p. 951-956.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:6
Keywords:TIC Keywords: Virulence; Typhula ishikariensis; Agrostis stolonifera; Agrostis tenuis; Agrostis canina; Typhula blight; Disease severity; Disease susceptibility
Abstract/Contents:"Speckled snow mold, caused by Typhula ishikariensis, is one of the most important Typhula snow molds in subarctic zones of the Northern Hemisphere. Nine isolates of three T. ishikariensis varieties (var. ishikariensis, var. canadensis, and var. idahoensis) isolated from infected turfgrasses on golf course fairways throughout Wisconsin were evaluated for their aggressiveness toward nine cultivars of three bentgrass species (three creeping, three colonial, and three velvet cultivars) under controlled environmental conditions. Speckled snow mold severity increased as inoculum concentration of T. ishikariensis was increased. In general, bentgrass susceptibility increased between 9 and 11 weeks after seeding but gradually decreased thereafter, suggesting expression of age-related resistance as plants matured. Significant differences in aggressiveness were detected within and among T. ishikariensis varieties. Significant interactions between T. ishikariensis varieties or isolates and bentgrass species were detected, but there was no interaction between pathogen isolates and bentgrass cultivars. Disease severity evaluations showed significant differences among bentgrass cultivars and species in their response to T. ishikariensis. Since bentgrass species exhibit differential responses to T. ishikariensis varieties, representative isolates of each variety should be employed for screening of bentgrass germplasm for resistance to speckled snow mold."
Language:English
References:34
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Chang, S. W., T. H. Chang, L. Tredway, and G. Jung. 2006. Aggressiveness of Typhula ishikariensis isolates to cultivars of bentgrass species (Agrostis spp.) under controlled environment conditions. Plant Dis. 90(7):p. 951-956.
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DOI: 10.1094/PD-90-0951
Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PD-90-0951
    Last checked: 01/07/2008
    Requires: PDF Reader
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MSU catalog number: SB 599 .P95
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