"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." . . . "7"^^ . . . . . . "RIV/25328859:_____/08:#0000352" . "Frekvence virulenc\u00ED proti rezistenci k padl\u00ED travn\u00EDmu u odr\u016Fd ozim\u00E9ho je\u010Dmene"@cs . "4" . "Frekvence virulenc\u00ED proti rezistenci k padl\u00ED travn\u00EDmu u odr\u016Fd ozim\u00E9ho je\u010Dmene"@cs . "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."@en . . "RIV/25328859:_____/08:#0000352!RIV09-MSM-25328859" . . "CZ - \u010Cesk\u00E1 republika" . . . "Virulence frequency to powdery mildew resistances in winter barley cultivars" . "P(OC08002)" . "1212-1975" . "Virulence frequency to powdery mildew resistances in winter barley cultivars" . . "000263049700004" . "Czech Journal of Genetics and Plant Breeding" . "[22F9B85CB9A4]" . "44" . "barley; Blumeria graminis f. sp. hordei; Hordeum vulgare; powdery mildew resistances; pathogen populations; virulence frequencies"@en . . "1"^^ . "Virulence frequency to powdery mildew resistances in winter barley cultivars"@en . "Dreiseitl, Anton\u00EDn" . . "Virulence frequency to powdery mildew resistances in winter barley cultivars"@en . . "V letech 2007 a 2008 byla studov\u00E1na frekvence virulenc\u00ED k odolnostem odr\u016Fd je\u010Dmene ozim\u00E9ho k padl\u00ED je\u010Dmene. N\u00E1hodn\u00E9 vzorky vzdu\u0161n\u00E9 populace patogenu byly z\u00EDsk\u00E1ny pomoc\u00ED mobiln\u00ED verze lapa\u010De spor. Konidie byly odchyceny p\u0159i pr\u016Fjezdu po tras\u00E1ch vedouc\u00EDch vybran\u00FDmi oblastmi \u010Cesk\u00E9 republiky. Celkem bylo prostudov\u00E1no 349 izol\u00E1t\u016F na 17-ti \u010Dlenn\u00E9m diferencia\u010Dn\u00EDm souboru. Byly zji\u0161t\u011Bny frekvence virulenc\u00ED ke specifick\u00FDm odolnostem dan\u00FDch odr\u016Fd v \u0161irok\u00E9m rozp\u011Bt\u00ED 0 a\u017E 100%. Pomoc\u00ED vybran\u00FDch 9 diferenci\u00E1tor\u016F bylo rozli\u0161eno 134 patotyp\u016F. Z nich 32 patotyp\u016F, kter\u00E9 byly zji\u0161t\u011Bny v obou sledovan\u00FDch letech, reprezentovalo 63.9% izol\u00E1t\u016F. Nejhojn\u011Bj\u0161\u00ED byl patotyp 773, kter\u00FD p\u0159ekon\u00E1val odolnost 8 diferenci\u00E1tor\u016F. V r. 2008 byla zji\u0161t\u011Bna ni\u017E\u0161\u00ED frekvence virulenc\u00ED ke v\u0161em diferenci\u00E1tor\u016Fm a t\u00EDm i ni\u017E\u0161\u00ED komplexnost populace, co\u017E m\u016F\u017Ee souviset s odli\u0161n\u00FDm region\u00E1ln\u00EDm p\u016Fvodem studovan\u00FDch izol\u00E1t\u016F. Je diskutov\u00E1n v\u00FDznam studia populace dan\u00E9ho patogenu pro \u00FAsp\u011Bch \u0161lecht\u011Bn\u00ED odoln\u00FDch odr\u016Fd je\u010Dmene."@cs . "1"^^ . . . "402774" . .