Virulence of wheat leaf rust in Slovakia in 1997–1998

Bartoš, Pavel; Huszár, J.; Herzová, Eva

doi:10.17221/9704-pps

Cited by 4 publications

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“…According to the reaction of investigated isolates from the territory of Slovakia on NILs, the resistance genes Lr2c, Lr3a, Lr11, Lr17, Lr21, Lr23 and Lr26 were ineffective. We have recorded high virulence to the Lr3a and Lr26 genes of resistance in Slovakia already for a longer time (Bartoš & Huszár 1996, 1998, Bartoš et al 1999. The high virulence to Lr3a and Lr26 evidently is the result of higher percentage of grown cultivars with these genes of resistance.…”

Section: Resultsmentioning

confidence: 89%

Occurrence of wheat leaf rust (Puccinia triticina) races and virulence changes in Slovakia in 1994–2004

et al. 2008

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Abstract:In 1995-2004 we investigated leaf rust virulence in Slovakia on Thatcher near isogenic lines (NILs) with genes Lr1, Lr2a, Lr2b, Lr2c, Lr3a, Lr9, Lr10, Lr11, Lr15, Lr17, Lr19, Lr21, Lr23, Lr24, Lr26 and Lr28. According to reaction of leaf rust isolates resistance genes Lr9 and Lr19 were completely effective to all examined pathotypes in all years. The resistance genes Lr24 and Lr28 were also completely effective to all examined pathotypes till the year 2001. In the year 2001 we detected 20% and 10% virulent isolates on NILs Lr24 and Lr28, respectively. According to the reaction of investigated isolates from the territory of Slovakia on NILs, resistance genes Lr2c, Lr3a, Lr11, Lr17, Lr21, Lr23 and Lr26 were mostly ineffective. During the 1994-2004 period we detected 16 races of leaf rust (races 2, 2SaBa, 6, 6SaBa, 12, 12SaBa, 14, 14SaBa, 57, 57SaBa, 61, 61SaBa, 62SaBa, 77, 77SaBa, 77/57SaBa). The most frequently determined races were 61SaBa and 77SaBa, which occurred in all years. Among frequently determined races we can assign race 12SaBa as well. According to the field tests in 2001-2004 good resistance to leaf rust was displayed by the cvs Arida (Lr13, Lru), Eva (Lr3, Lru) and Solara (Lru).

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Section: Resultsmentioning

confidence: 89%

Occurrence of wheat leaf rust (Puccinia triticina) races and virulence changes in Slovakia in 1994–2004

et al. 2008

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“…Lr26 (= 61SaBa; with virulence to Lr26 present in the cultivar Salzmünder Bartwiezen) comprised 64% of all isolates and virulence to Lr9, Lr19, Lr21, Lr24 and Lr28 was absent (Bartos and Huszar 1998). Hanzalova and Bartos (2006) studied virulence of the wheat leaf rust pathogen population in the Czech Republic during 2001-2004 on Thatcher near-isogenic lines with Lr1,2a,2b,2c,3a,9,10,11,15,17a,19,21,23,24,26,and Lr28.…”

Section: Europementioning

confidence: 99%

Global status of wheat leaf rust caused by Puccinia triticina

et al. 2011

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Leaf rust caused by Puccinia triticina is the most common and widely distributed of the three wheat rusts. Losses from leaf rust are usually less damaging than those from stem rust and stripe rust, but leaf rust causes greater annual losses due to its more frequent and widespread occurrence. Yield losses from leaf rust are mostly due to reductions in kernel weight. Many laboratories worldwide conduct leaf rust surveys and virulence analyses. Most currently important races (pathotypes) have either evolved through mutations in existing populations or migrated from other, often unknown, areas. Several leaf rust resistance genes are cataloged, and high levels of slow rusting adult plant resistance are available in high yielding CIMMYT wheats. This paper summarizes the importance of leaf rust in the main wheat production areas as reflected by yield losses, the complexity of virulence variation in pathogen populations, the role cultivars with racespecific resistance play in pathogen evolution, and the control measures currently practiced in various regions of the world.

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“…The data indicate great genetic diversity in the European population of the wheat leaf rust fungus, especially in south-eastern Europe. 1,2c,3,11,17,21,23,28 ---5.9 -1,2c, 3,9,11,15,17,21,23,24,26,28 2. 0 2b,2c,3,11,17,21,23 ---5.9 - 2b,2c,3,11,17,21,23,26 ---5.9 -2b,2c, 3,11,15,17,21,26 -22.5 --1.5 2a,2b,2c, 11,15,17,21,26 5.0 3.…”

Section: Pathotype Compositionmentioning

confidence: 99%

European virulence survey for leaf rust in wheat

et al. 2000

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International audienceWith standardised near isogenic line (NIL) differentials co-operators were able to present the first comprehensive virulence survey of the European wheat leaf rust population (1996-1999). The work included pathotype identification of 2608 isolates and field tests of NILs. Lr9 and Lr19 were very effective all over Europe. Lr24, Lr25, and Lr28 were also effective, but in some countries and locations substantial virulence frequencies were observed. In addition, the genes Lr12, Lr13, Lr22a, Lr34, Lr35 and Lr37 were effective at the adult plant stage, but locally less so. In general, the indoor seedling tests and adult plant field tests showed good agreement. Virulence to Lr1, Lr2a, Lr24, Lr25, Lr28 and Lr29 tended to increase in the period, for the other Lr-genes the virulence frequency remained more or less stable. Among the 105 pathotypes identified none was clearly predominant in Europe.La situation en Europe pour la virulence de la rouille brune chez le blé. L'utilisation d'une gamme d'hôtes différentiels commune composée de lignées isogéniques (NIL) a permis aux auteurs de réaliser le premier inventaire exhaustif de la population européenne de rouille brune du blé (1996-1999). Deux mille six cent huit isolats ont été identifiés et les NIL ont été évaluées au champ. Lr9 et Lr19 se sont révélés efficaces dans toute l'Europe. Lr24, Lr25 et Lr28 ont également été efficaces, mais la fréquence des virulences correspondantes était non négligeable dans certains pays et certains lieux. Les gènes Lr12, Lr13, Lr22a, Lr34, Lr35 et Lr37 ont été efficaces au stade adulte, excepté dans quelques lieux. En général, les résultats des tests au stade plantule en conditions contrôlées ont été cohérents avec ceux obtenus au stade adulte au champ. Les fréquences de virulence sont demeurées stables au cours de la période étudiée, sauf pour Lr1, Lr2a, Lr24, Lr25 et Lr29, dont les fréquences de virulence correspondantes tendaient à augmenter. Aucun des 105 pathotypes identifiés n'est apparu clairement dominant en Europe

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Virulence of wheat leaf rust in Slovakia in 1997–1998

Cited by 4 publications

References 0 publications

Occurrence of wheat leaf rust (Puccinia triticina) races and virulence changes in Slovakia in 1994–2004

Occurrence of wheat leaf rust (Puccinia triticina) races and virulence changes in Slovakia in 1994–2004

Global status of wheat leaf rust caused by Puccinia triticina

European virulence survey for leaf rust in wheat

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