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Web URL(s): | http://www.apsnet.org/publications/phytopathology/backissues/Documents/1980Articles/phyto70n06_X0026.pdf Last checked: 08/06/2013 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Author(s): | Bruton, B. D.;
Toler, R. W. |
Author Affiliation: | Dept. of Plant Sciences, Texas A&M Univ., College Station |
Title: | Influence of time and temperature on inoculation and infection of St. Augustine by Sclerophithora macrospora |
Meeting Info.: | February 3-6, 1980: Joint Meeting of The American Phytopathological Society Southern Division and the Southern Association of Agricultural Scientists |
Source: | Phytopathology. Vol. 70, No. 6, June 1980, p. 565. |
Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
# of Pages: | 1 |
Keywords: | TIC Keywords: Disease development; Disease evaluation; Disease severity; Disease susceptibility; Downy mildew; Infection; Inoculation; Sclerophthora macrospora; Sporangia; Stenotaphrum secundatum; Symptoms; Temperature response; Zoospores
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Abstract/Contents: | "Sporangia of Sclerophthora macroscopa, the causal agent of downy mildew of St. Augustine (SA), were produced on infected leaf blades over a temperature range of 5 to 25 C with an optimum at 15C. Optimum temperature range for subsequent zoospore production was determined to be 15 to 20 C with an zoospore encystment and germination occurring at 15 to 25 C. Zoopores demonstrated a positive chemotactic response towards he abxial surface of newly expanding leaves and to a lesser extent to the leaf margins. Infection of leaves by zoospores occurred between 10 and 25 C with an optimum at 15 C. Inoculation techniques involved flooding the grass with tap H2O and floating naturally infected SA leaves on the surface to allow for psorangia and subsequent zoospore production.The shortest exposure time required for optimum infection was 24 hr at 15 C." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Bruton, B. D., and R. W. Toler. 1980. Influence of time and temperature on inoculation and infection of St. Augustine by Sclerophithora macrospora. Phytopathology. 70(6):p. 565. |
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| Web URL(s): http://www.apsnet.org/publications/phytopathology/backissues/Documents/1980Articles/phyto70n06_X0026.pdf Last checked: 08/06/2013 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: b2219736a |
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