Full TGIF Record # 92411
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Web URL(s):http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2002.92.6.S137#page=2
    Last checked: 10/16/2015
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Iriarte, F. B.; Fry, J. D.; Martin, D. L.; Tisserat, N. A.
Author Affiliation:Iriarte and Tisserat: Department of Plant Pathology; Fry: Division of Horticulture, Kansas State University, Manhattan, Kansas; and Martin: Department Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, Oklahoma
Title:Aggressiveness of spring dead spot pathogens to bermudagrass cultivars exposed to low temperatures
Section:2002 North central division meeting abstracts
Other records with the "2002 North central division meeting abstracts" Section
Meeting Info.:APS North Central Division, June 19-21, 2001, Manhattan, KS
Source:Phytopathology. Vol. 92, No. 6, June 2002, p. S138.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:1
Keywords:TIC Keywords: Spring dead spot; Pathogens; Cultivar evaluation; Cynodon; Temperatures; Ophiosphaerella herpotricha; Ophiosphaerella korrae; Inoculation
Cultivar Names:Tifgreen; Champion; Midlawn; Guymon
Geographic Terms:Southern Great Plains; Southeastern United States
Abstract/Contents:"Spring dead spot (SDS) disease of bermudagrass primarily is caused by Ophiosphaerella herpotricha in the southern Great Plains and by O. korrae in the southeastern United States. We studied the aggressiveness of these fungi to selected bermudagrass cultivars following cold temperature treatments. One susceptible (Tifgreen), two resistant (Midlawn, Guymon) and one cultivar (Champion) with undetermined field resistance to SDS were inoculated with O. herpotricha or O. korrae isolates. Inoculated grass was incubated at 25°C (non-acclimated) or 4°C (cold-acclimated) for 1 mo and then exposed to -2 to -8°C for 2 to 8 hr. Shoot survival was determined 1 mo after exposure to subfreezing temperatures. Inoculated, cold-acclimated plants exhibited greater shoot mortality than similarly treated non-acclimated plants. In cold acclimated plants, O. herpotricha caused more shoot death than O. korrae at all freezing temperatures tested. No differences in shoot mortality were detected among cultivars inoculated with the same pathogen. In general, shoot mortality on inoculated, non-acclimated plants was relatively light and was not affected by lowering the freezing temperature from -2 to -6°C. O. korrae caused similar or more shoot death that O. herpotricha on all non-acclimated cultivars."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Iriarte, F. B., J. D. Fry, D. L. Martin, and N. A. Tisserat. 2002. Aggressiveness of spring dead spot pathogens to bermudagrass cultivars exposed to low temperatures. Phytopathology. 92(6):p. S138.
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Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2002.92.6.S137#page=2
    Last checked: 10/16/2015
    Requires: PDF Reader
    Notes: Item is within a single large file
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MSU catalog number: SB 599 .P48
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