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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25271121%3A_____%2F15%3A%230000611" target="_blank" >RIV/25271121:_____/15:#0000611 - isvavai.cz</a>

Alternative codes found

RIV/00027006:_____/15:00003612

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

GF - Diseases, pests, weeds and plant protection

OECD FORD branch

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Project

<a href="/en/project/QJ1210184" target="_blank" >QJ1210184: The utilization of biotechnological methods for more effective testing of pome fruit resistance to fire blight (bacterium Erwinia amylovora)</a><br>

Continuities

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

Publication year

2015

Confidentiality

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

Article name in the collection

Acta Horticulturae

ISBN

978-94-6261-092-7

ISSN

0567-7572

e-ISSN

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Number of pages

4

Pages from-to

477-480

Publisher name

International Society for Horticultural Science

Place of publication

Leuven, Belgium

Event location

Leuven, Belgium

Event date

Jul 14, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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