Rozdílná citlivost k fungicidům v českých populacích Pseudoperonospora cubensis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F04%3A00002296" target="_blank" >RIV/61989592:15310/04:00002296 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Differential sensitivity to fungicides in Czech populations of Pseudoperonospora cubensis

Popis výsledku v původním jazyce

During the growing seasons of 2001 and 2002, 42 isolates of Pseudoperonospora cubensis were collected from nine regions of Czech Republic and screened for tolerance or resistance to fungicides. The effectiveness of three frequently used fungicides (Previcur 607 SL /propamocarb/, Aliette 80 WP /fosetyl-Al/, Ridomil Plus 48 /metalaxyl/) was tested at five concentrations, using a floating disc bioassay. Fungicide effectiveness varied considerably. Propamocarb was the most effective as all isolates were sensitive to all concentrations (607-9712 #g a.i./ml). Fosetyl-Al was also effective, as most isolates were controlled by the optimal concentration (1600 #g a.i./ml). However, the occurrence of isolates collected in 2001 that sporulated at low concentrations (400 and 800 #g a.i./ml) of this fungicide could indicate that selection for tolerance is occurring in the population, but this was not re-observed on the P. cubensis isolates collected in 2002. Metalaxyl was ineffective, as 93% of the

Název v anglickém jazyce

Differential sensitivity to fungicides in Czech populations of Pseudoperonospora cubensis

Popis výsledku anglicky

During the growing seasons of 2001 and 2002, 42 isolates of Pseudoperonospora cubensis were collected from nine regions of Czech Republic and screened for tolerance or resistance to fungicides. The effectiveness of three frequently used fungicides (Previcur 607 SL /propamocarb/, Aliette 80 WP /fosetyl-Al/, Ridomil Plus 48 /metalaxyl/) was tested at five concentrations, using a floating disc bioassay. Fungicide effectiveness varied considerably. Propamocarb was the most effective as all isolates were sensitive to all concentrations (607-9712 #g a.i./ml). Fosetyl-Al was also effective, as most isolates were controlled by the optimal concentration (1600 #g a.i./ml). However, the occurrence of isolates collected in 2001 that sporulated at low concentrations (400 and 800 #g a.i./ml) of this fungicide could indicate that selection for tolerance is occurring in the population, but this was not re-observed on the P. cubensis isolates collected in 2002. Metalaxyl was ineffective, as 93% of the

Druh

D - Stať ve sborníku

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Progress in Cucurbit Genetics and Breeding Research. Proceedings of Cucurbitaceae 2004, the 8th EUCARPIA Meeting on Cucurbit Genetics and Breeding.

ISBN

80-86636-04-6

ISSN

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e-ISSN

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Počet stran výsledku

566

Strana od-do

275-280

Název nakladatele

Univerzita Palackého

Místo vydání

Olomouc

Místo konání akce

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Datum konání akce

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Typ akce podle státní příslušnosti

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Kód UT WoS článku

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