Evaluation of Susceptibility Level of Old Pear Cultivars and Landraces to Fire Blight (Erwinia amylovora) in Field Conditions

Kód výsledku v IS VaVaI

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Nalezeny alternativní kódy

RIV/00027006:_____/15:00003612

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of Susceptibility Level of Old Pear Cultivars and Landraces to Fire Blight (Erwinia amylovora) in Field Conditions

Popis výsledku v původním jazyce

Twelve older pear cultivars and Czech landraces, two new breeding and three commercially grown cultivars (Beurre Bose, Conference and Williams) as standards were tested for their relative susceptibility level to fire blight after artificial inoculation in the climatic conditions of the Czech Republic. Tests were carried out in the research station of the Crop Research Institute in Slany in technical isolators covered insect proof net in suitable climatic conditions (temperature >15 °C, relative humidity >75%). Artificial inoculations were carried out in the period of strong extending growth by decapitation of shoot tips by scissors dipped in the bacterial suspension (concentration 106 cfu) of a mix of virulent strains of Erwinia amylovora. The level of resistance was determined by the percentage of necrotic lesion development to total length of shoots (in cm) after 40 days. Calculated intensity of infection was transferred to 6-point evaluation scale: highly resistant 0.0-7.0%, resistant 7.1-13.0%, moderately resistant 13.1-26.0%, moderately susceptible 26.1-60.0%, susceptible 60.1-80.0% and highly susceptible 80.1-100.0%. From tested genotypes, only Avransska was evaluated as resistant (0.0% infection intensity). The rresistance level of Avransska was comparable to the newly bred US-62-537-48. Most of the testing genotypes were categorized as moderately susceptible, susceptible or highly susceptible.

Název v anglickém jazyce

Evaluation of Susceptibility Level of Old Pear Cultivars and Landraces to Fire Blight (Erwinia amylovora) in Field Conditions

Popis výsledku anglicky

Twelve older pear cultivars and Czech landraces, two new breeding and three commercially grown cultivars (Beurre Bose, Conference and Williams) as standards were tested for their relative susceptibility level to fire blight after artificial inoculation in the climatic conditions of the Czech Republic. Tests were carried out in the research station of the Crop Research Institute in Slany in technical isolators covered insect proof net in suitable climatic conditions (temperature >15 °C, relative humidity >75%). Artificial inoculations were carried out in the period of strong extending growth by decapitation of shoot tips by scissors dipped in the bacterial suspension (concentration 106 cfu) of a mix of virulent strains of Erwinia amylovora. The level of resistance was determined by the percentage of necrotic lesion development to total length of shoots (in cm) after 40 days. Calculated intensity of infection was transferred to 6-point evaluation scale: highly resistant 0.0-7.0%, resistant 7.1-13.0%, moderately resistant 13.1-26.0%, moderately susceptible 26.1-60.0%, susceptible 60.1-80.0% and highly susceptible 80.1-100.0%. From tested genotypes, only Avransska was evaluated as resistant (0.0% infection intensity). The rresistance level of Avransska was comparable to the newly bred US-62-537-48. Most of the testing genotypes were categorized as moderately susceptible, susceptible or highly susceptible.

Druh

D - Stať ve sborníku

CEP obor

GF - Choroby, škůdci, plevely a ochrana rostlin

OECD FORD obor

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Projekt

<a href="/cs/project/QJ1210184" target="_blank" >QJ1210184: Využití biotechnologických metod pro zefektivnění testování rezistence jádrovin vůči patogenu bakteriální spály růžovitých (bakterie Erwinia amylovora)</a><br>

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Acta Horticulturae

ISBN

978-94-6261-092-7

ISSN

0567-7572

e-ISSN

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Počet stran výsledku

4

Strana od-do

477-480

Název nakladatele

International Society for Horticultural Science

Místo vydání

Leuven, Belgium

Místo konání akce

Leuven, Belgium

Datum konání akce

14. 7. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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