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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2001.91.6.S1#page=92
Last checked: 10/16/2015
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Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Vincelli, P.;
Dixon, E. |
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| Author Affiliation: | Department of Plant Pathology, University of Kentucky, Lexington |
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| Title: | Resistance to QoI (=strobilurin) fungicides in Pyricularia grisea from perennial ryegrass |
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| Meeting Info.: | 2001 APS/MSA/SON Joint Meeting, Salt Lake City, Utah: August 25-29, 2001 |
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| Source: | Phytopathology. Vol. 91, No. 6, June Supplement 2001, p. S92. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Fungicide resistance; Strobilurin fungicides; Lolium perenne; Azoxystrobin; Gray leaf spot; Trifloxystrobin; Pyraclostrobin; Disease control; Pyricularia grisea; Disease development
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| Abstract/Contents: | "Azoxystrobin (azo) failed to control gray leaf spot (GLS) of perennial ryegrass at a local golf course during Aug 00. Fungicide-resistant isolates (RI) were compared to baseline isolates (BLI) from sites with no use of QoI fungicides. For BLI, ranges for EC(50) values for conidial germination in vitro in 100 ug/ml SHAM acid were 0.015-0.064, 0.013-0.078, and 0.006-0.058 ug/ml for azo, trifloxystrobin (tri), and pyraclostrobin (pyr), respectively; EC50 values for RI were 2.39-44.8, 0.31-111, and 0.194-11.2 ug/ml, respectively. Azo, tri, and pyr provided complete control of five BLI in planta. For three of four RI tested, azo and tri provided very poor to no control; the fourth isolate was partially controlled by azo and fully controlled by tri. Pyr provided partial control of two strains and complete control of the others. We conclude that one or more biotypes of ryegrass-infecting strains of P. grisea with resistance to QoI fungicides have emerged." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Vincelli, P., and E. Dixon. 2001. Resistance to QoI (=strobilurin) fungicides in Pyricularia grisea from perennial ryegrass. Phytopathology. 91(6):p. S92. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2001.91.6.S1#page=92
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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