Physiologic specialization of wheat leaf rust (Puccinia triticina Eriks.) in the Slovak Republic in 2009-2011

Abstract

Abstract:In 2009-2011 virulence of the wheat leaf rust population was studied on Thatcher near-isogenic lines with Lr1, Lr2a, Lr2b, Lr2c, Lr3a, Lr9, Lr11, Lr13, Lr15, Lr17, Lr19, Lr21, Lr23, Lr24, Lr26 and Lr28. Samples of leaf rust were obtained from different parts of the Slovak Republic. A total of 122 wheat leaf rust isolates were analysed. Resistance gene Lr19 was effective to all tested isolates. Virulence to Lr9 was found, however only in one isolate. Gene Lr24 conditioned resistance to almost all rust collections. A lower frequency of virulence to Lr2a and Lr28 was also observed. Nineteen winter wheat cultivars grown in Slovakia were tested with 8 leaf rust isolates. Winter wheat cultivar Bona Dea was resistant to all isolates applied in the greenhouse test. Presence of Lr genes was estimated according to the reactions of the tested cultivars. Presence of Lr10, Lr26, Lr34 and Lr37 was studied by molecular markers.

Physiological specialization of wheat leaf rust (Puccinia triticina Eriks.) in the Czech Republic in 2009-2011

“…Carroll can (Hanzalová 2010). In the period 1994-2011 virulence to Lr19 was not recorded in Slovakia (Hanzalová et al 2008(Hanzalová et al , 2012. In Germany virulence to Lr19 was found in 1999 (Gultyaeva et al 2000).…”

Virulence of wheat leaf rust (Puccinia triticina Eriks.) in the years 2013–2015 and resistance of wheat cultivars in Slovakia

“…These results indicated that additional genes other than those revealed by the molecular markers are also present in wheat cultivars registered in Slovakia. Molecular markers for Lr10, Lr26, Lr34, and Lr37 were used in the tests as in our previous study (Hanzalová et al 2012). In addition marker for Lr24 was also applied because among the cultivars registered in the Czech Republic (Hanzalová et al 2013) the cultivar Carroll was found to possess Lr24.…”

“…Molecular markers for Lr10, Lr26, Lr34, and Lr37 were used in the tests as in our previous study (Hanzalová et al 2012). In addition marker for Lr24 was also applied because among the cultivars registered in the Czech Republic (Hanzalová et al 2013) the cultivar Carroll was found to possess Lr24. The genes identified in the cultivars Altigo, Bertold, Dagmar, Mulan and Viglanka were recorded already earlier (Hanzalová et al 2012(Hanzalová et al , 2015.…”

“…In addition marker for Lr24 was also applied because among the cultivars registered in the Czech Republic (Hanzalová et al 2013) the cultivar Carroll was found to possess Lr24. The genes identified in the cultivars Altigo, Bertold, Dagmar, Mulan and Viglanka were recorded already earlier (Hanzalová et al 2012(Hanzalová et al , 2015. The common Lr genes detected with the molecular markers were Lr37 (43%), followed by Lr34 (16%), Lr10 (14%) and Lr26 (11%).…”

“…Virulence of wheat leaf rust (physiologic races) in Slovakia has been studied since the 1960s. Virulence data from the years 1994-2011 were published by Hanzalová et al ( , 2010Hanzalová et al ( , 2012. This paper contains results of the wheat leaf rust virulence surveys carried out in the years 2013, 2014 and 2015, as well as data on seedling resistance of selected wheat cultivars grown in Slovakia to 12 different leaf rust races.…”