| dc.date |
2006-12-05T18:39:46Z |
|
| dc.date |
2006-12-05T18:39:46Z |
|
| dc.date |
1985 |
|
| dc.date.accessioned |
2013-10-16T07:42:48Z |
|
| dc.date.available |
2013-10-16T07:42:48Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://hdl.handle.net/1957/3612 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3612 |
|
| dc.description |
Isolates of Botrytis cinerea from containerized conifer seedlings from two
nurseries in the Northern Rocky Mountains were exposed to the
dicarboximide fungicides vinclozolin and iprodione and the chlorinated
nitroaniline fungicide dicloran to evaluate occurrence and characteristics
of resistant strains. The isolates were grown on test media prepared by
incorporating the fungicides at various concentrations into potato
dextrose agar. In this way, we were able to select B. cinerea strains
resistant to increasing fungicide concentrations up to a maximum of 10,000
ug/ml. Resistance to the three fungicides occurred in isolates not
previously exposed to the chemicals. Some strains were even resistant to
high fungicide concentrations. Genetic stability of these resistant
strains was confirmed by growing them in the absence of fungicides.
Cross-resistance among the three fungicides was common. Vinclozolin and
iprodione generally inhibited spore germination more than mycelial growth;
the opposite was true for dicloran. Ramifications of fungicide resistance
in disease control are discussed. |
|
| dc.language |
en_US |
|
| dc.publisher |
Missoula, Mont. : USDA Forest Service, Northern Region, Cooperative Forestry and Pest Management |
|
| dc.relation |
Report (United States. Forest Service. Northern Region) |
|
| dc.relation |
no. 85-3 |
|
| dc.relation |
Cooperative forestry and pest management |
|
| dc.title |
Resistance of Botrytis cinerea to vinclozolin, iprodione and dicloran |
|
| dc.type |
Technical Report |
|