Sensitivity to Fungicides and Essential Oils in Czech Isolates of Phytophthora infestans.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60109807%3A_____%2F18%3AN0000016" target="_blank" >RIV/60109807:_____/18:N0000016 - isvavai.cz</a>

Výsledek na webu

<a href="https://sab.czu.cz/en/r-8044-archive/r-13505-2018-issues/r-13507-02-2018" target="_blank" >https://sab.czu.cz/en/r-8044-archive/r-13505-2018-issues/r-13507-02-2018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/sab-2018-11" target="_blank" >10.2478/sab-2018-11</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sensitivity to Fungicides and Essential Oils in Czech Isolates of Phytophthora infestans.

Popis výsledku v původním jazyce

A total of 235 Phytophthora infestans isolates were collected from five regions of the Czech Republic during the growing seasons 2012-2014 and 2016 and examined using the in vitro amended agar method for their sensitivity to metalaxyl-M (MFX), propamocarb-HCl (PCH), and dimethomorph (DMM). A majority of the isolates (50%) were sensitive to MFX. Resistant isolates were found in all four years of the survey, they represented 30% of the samples. The EC50 values of PCH in inhibiting mycelial growth of 65% of the overall isolates were higher than 100 micrograms per ml, which indicates the occurrence of insensitivity to PCH in the Czech P. infestans populations. DMM was very effective, and the mycelial growth of all isolates tested was completely suppressed at the concentration of 0,1 microgram per ml. Furthermore, the efficacy of 12 plant essential oils was tested against 20 isolates of P. infestans using the in vitro amended agar method. Essential oils of Cymbopogon winterianus, Litsea cubeba, Mentha spicata, Pelargonium graveolens, Syzygium aromaticum, and Thymus vulgaris were observed to have the highest antifungal activity against P. infestans, with minimal inhibitory concentrations less than or equal to 1 microliter per ml.

Název v anglickém jazyce

Sensitivity to Fungicides and Essential Oils in Czech Isolates of Phytophthora infestans.

Popis výsledku anglicky

A total of 235 Phytophthora infestans isolates were collected from five regions of the Czech Republic during the growing seasons 2012-2014 and 2016 and examined using the in vitro amended agar method for their sensitivity to metalaxyl-M (MFX), propamocarb-HCl (PCH), and dimethomorph (DMM). A majority of the isolates (50%) were sensitive to MFX. Resistant isolates were found in all four years of the survey, they represented 30% of the samples. The EC50 values of PCH in inhibiting mycelial growth of 65% of the overall isolates were higher than 100 micrograms per ml, which indicates the occurrence of insensitivity to PCH in the Czech P. infestans populations. DMM was very effective, and the mycelial growth of all isolates tested was completely suppressed at the concentration of 0,1 microgram per ml. Furthermore, the efficacy of 12 plant essential oils was tested against 20 isolates of P. infestans using the in vitro amended agar method. Essential oils of Cymbopogon winterianus, Litsea cubeba, Mentha spicata, Pelargonium graveolens, Syzygium aromaticum, and Thymus vulgaris were observed to have the highest antifungal activity against P. infestans, with minimal inhibitory concentrations less than or equal to 1 microliter per ml.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Scientia Agriculturae Bohemica

ISSN

1211-3174

e-ISSN

1805-9430

Svazek periodika

49

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

9

Strana od-do

69-77

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85049232077