Full TGIF Record # 24904
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Web URL(s):http://www.apsnet.org/publications/plantdisease/backissues/Documents/1992Articles/PlantDisease76n09_911.PDF
    Last checked: 08/25/2010
    Requires: PDF Reader
Publication Type:
i
Refereed
Author(s):Gwinn, K. D.; Gavin, A. M.
Author Affiliation:Gwinn: Assistant Professor; Gavin: Research Associate, Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, Tennessee
Title:Relationship between endophyte infestation level of tall fescue seed lots and Rhizoctonia zeae seedling disease
Source:Plant Disease. Vol. 76, No. 9, September 1992, p. 911-914.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:4
Keywords:TIC Keywords: Endophytes; Infestations; Festuca arundinacea; Rhizoctonia zeae
Abstract/Contents:"The objective of this research was to define the relationship between endophyte (Acremonium coenophialum) infestation level of tall fescue (Festuca arundinacea) seed lots and a seedling disease caused by Rhizoctonia zeae. Seeds were planted in soilless medium or medium amended with R. zeae cultures, and number of seedlings per three 5.0-cm cores was determined. In a preliminary experiment, percentage of loss (61%) was greater for Forager (a low-endophyte cultivar) than for a Kentucky 31 seed lot with an 85% endophyte infestation level (32%). In subsequent experiments, Kentucky 31 seed lots with either 0 or 85% endophyte infestation level were used to determine if high percentage of loss in Forager was due to the lack of endophyte infection or to cultivar differences. For two R. zeae isolates, the number of seedlings was significantly higher in controls than in R. zeae treatments. Interactions between endophyte level and treatment were significantly different for both isolates. Additional seed lots were used to determine the nature of the relationship between endophyte infestation level and seedling loss. The relationship between endophyte level and seedling number was linear for both R. zeae treatments and controls (P=0.0615)."
Language:English
References:26
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gwinn, K. D., and A. M. Gavin. 1992. Relationship between endophyte infestation level of tall fescue seed lots and Rhizoctonia zeae seedling disease. Plant Dis. 76(9):p. 911-914.
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http://www.apsnet.org/publications/plantdisease/backissues/Documents/1992Articles/PlantDisease76n09_911.PDF
    Last checked: 08/25/2010
    Requires: PDF Reader
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