Changes in Virulence Frequencies and Higher Fitness of Simple Pathotypes in the Czech Population of Blumeria graminis f.sp hordei

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25328859%3A_____%2F15%3A%230000830" target="_blank" >RIV/25328859:_____/15:#0000830 - isvavai.cz</a>

Result on the web

<a href="http://www.agriculturejournals.cz/publicFiles/149550.pdf" target="_blank" >http://www.agriculturejournals.cz/publicFiles/149550.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17221/96/2014-PPS" target="_blank" >10.17221/96/2014-PPS</a>

Result language

angličtina

Original language name

Changes in Virulence Frequencies and Higher Fitness of Simple Pathotypes in the Czech Population of Blumeria graminis f.sp hordei

Original language description

The employment of specific genes, which determine host resistance to avirulent pathotypes of the pathogen, is not recommended for protecting barley against powdery mildew (Blumeria graminis f.sp. hordei). However, most barley varieties still possess specific resistance genes to this pathogen. The effectiveness of such resistances was determined by assessing virulence frequency using randomly collected Czech population samples of 521 pathogen isolates from the air tested on 29 barley differential varieties over a four-year period. Most virulence frequencies did not show major changes, but the frequencies on the winter cv. Laverda and the spring cv. Kangoo greatly increased. The highest virulence frequency in all four years was on the resistance Ru2 in Kompolti 4. The period of sampling the air population and associated changes in the proportion of spores that developed on spring and winter varieties with different resistances are one of causes of the changes in virulence frequencies. It was also found out that the virulence complexity of pathotypes with the frequency > 1 was markedly lower than the complexity of pathotypes with the frequency of 1. This could indicate the higher fitness of pathotypes with fewer virulences.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GF - Diseases, pests, weeds and plant protection

OECD FORD branch

—

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

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

Name of the periodical

PLANT PROTECTION SCIENCE

ISSN

1212-2580

e-ISSN

—

Volume of the periodical

51

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

7

Pages from-to

67-73

UT code for WoS article

000354769600003

EID of the result in the Scopus database

—