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Statements

Subject Item
n2:RIV%2F25328859%3A_____%2F08%3A%230000352%21RIV09-MSM-25328859
rdf:type
n17:Vysledek skos:Concept
dcterms:description
Virulence frequencies to powdery mildew resistances in winter barley cultivars were studied in 2007 and 2008. Random samples of the air populations were obtained by means of a mobile version of a jet spore sampler. Conidia were sampled by driving across the Czech Republic. In total 349 isolates were studied and 17 differentials were used. The virulence frequencies to specific resistances of given cultivars showed wide range from 0% to 100%. Nine differentials were used to distinguish 134 pathotypes, of which 32 representing 63.9% of isolates were detected in both years. The pathotype 773 was most abundant that broke down the resistance of eight differentials. In 2008, lower virulence frequencies to all differentials, and thus lower population complexity, were determined, which may be caused by different regional origins of the isolates examined. Importance of the study of the given pathogen population is discussed in terms of successful breeding resistant barley cultivars. Virulence frequencies to powdery mildew resistances in winter barley cultivars were studied in 2007 and 2008. Random samples of the air populations were obtained by means of a mobile version of a jet spore sampler. Conidia were sampled by driving across the Czech Republic. In total 349 isolates were studied and 17 differentials were used. The virulence frequencies to specific resistances of given cultivars showed wide range from 0% to 100%. Nine differentials were used to distinguish 134 pathotypes, of which 32 representing 63.9% of isolates were detected in both years. The pathotype 773 was most abundant that broke down the resistance of eight differentials. In 2008, lower virulence frequencies to all differentials, and thus lower population complexity, were determined, which may be caused by different regional origins of the isolates examined. Importance of the study of the given pathogen population is discussed in terms of successful breeding resistant barley cultivars. V letech 2007 a 2008 byla studována frekvence virulencí k odolnostem odrůd ječmene ozimého k padlí ječmene. Náhodné vzorky vzdušné populace patogenu byly získány pomocí mobilní verze lapače spor. Konidie byly odchyceny při průjezdu po trasách vedoucích vybranými oblastmi České republiky. Celkem bylo prostudováno 349 izolátů na 17-ti členném diferenciačním souboru. Byly zjištěny frekvence virulencí ke specifickým odolnostem daných odrůd v širokém rozpětí 0 až 100%. Pomocí vybraných 9 diferenciátorů bylo rozlišeno 134 patotypů. Z nich 32 patotypů, které byly zjištěny v obou sledovaných letech, reprezentovalo 63.9% izolátů. Nejhojnější byl patotyp 773, který překonával odolnost 8 diferenciátorů. V r. 2008 byla zjištěna nižší frekvence virulencí ke všem diferenciátorům a tím i nižší komplexnost populace, což může souviset s odlišným regionálním původem studovaných izolátů. Je diskutován význam studia populace daného patogenu pro úspěch šlechtění odolných odrůd ječmene.
dcterms:title
Frekvence virulencí proti rezistenci k padlí travnímu u odrůd ozimého ječmene Virulence frequency to powdery mildew resistances in winter barley cultivars Virulence frequency to powdery mildew resistances in winter barley cultivars
skos:prefLabel
Frekvence virulencí proti rezistenci k padlí travnímu u odrůd ozimého ječmene Virulence frequency to powdery mildew resistances in winter barley cultivars Virulence frequency to powdery mildew resistances in winter barley cultivars
skos:notation
RIV/25328859:_____/08:#0000352!RIV09-MSM-25328859
n4:aktivita
n7:P
n4:aktivity
P(OC08002)
n4:cisloPeriodika
4
n4:dodaniDat
n15:2009
n4:domaciTvurceVysledku
n14:3336824
n4:druhVysledku
n10:J
n4:duvernostUdaju
n16:S
n4:entitaPredkladatele
n9:predkladatel
n4:idSjednocenehoVysledku
402774
n4:idVysledku
RIV/25328859:_____/08:#0000352
n4:jazykVysledku
n13:eng
n4:klicovaSlova
barley; Blumeria graminis f. sp. hordei; Hordeum vulgare; powdery mildew resistances; pathogen populations; virulence frequencies
n4:klicoveSlovo
n5:pathogen%20populations n5:Blumeria%20graminis%20f.%20sp.%20hordei n5:Hordeum%20vulgare n5:barley n5:powdery%20mildew%20resistances n5:virulence%20frequencies
n4:kodStatuVydavatele
CZ - Česká republika
n4:kontrolniKodProRIV
[22F9B85CB9A4]
n4:nazevZdroje
Czech Journal of Genetics and Plant Breeding
n4:obor
n11:GE
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
1
n4:projekt
n8:OC08002
n4:rokUplatneniVysledku
n15:2008
n4:svazekPeriodika
44
n4:tvurceVysledku
Dreiseitl, Antonín
n4:wos
000263049700004
s:issn
1212-1975
s:numberOfPages
7