scholarly journals Wheat leaf rust races/pathotypes in Slovakia in 1999–2000

2001 ◽  
Vol 37 (No. 3) ◽  
pp. 81-90
Author(s):  
P. Bartoš ◽  
J. Huszár ◽  
A. Hanzalová ◽  
E. Herzová
Keyword(s):  
Leaf Rust ◽  
Near Isogenic Lines ◽  
Wheat Leaf Rust ◽  
Isogenic Lines ◽  
Wheat Leaf

Virulence of the wheat leaf rust populations of 1999 and 2000 from Slovakia was studied on Thatcher near-isogenic lines (NILs) with genes Lr1, Lr2a, Lr2b, Lr2c, Lr3a, Lr9, Lr10 (only in 2000), Lr11, Lr15, Lr17, Lr19, Lr21, Lr23, Lr24, Lr26 and Lr28. Seven pathotypes were determined from 36 rust samples in 1999, and 17 pathotypes from 45 rust samples in 2000. The frequency of virulence on Lr1, Lr2a and Lr2b was relatively low, and there was no virulence on Lr9, Lr19, Lr24 and Lr28. The frequency of virulence on Lr2c, Lr15, Lr23 and Lr26 varied between 53.0 and 97.8%. All isolates were virulent on Lr3, Lr11, Lr17 and Lr21. The identified pathotypes conformed with races 61SaBa, 57SaBa, 12SaBa, 6SaBa, 77SaBa, 6, 61 and 2SaBa. In 1999 races 61SaBa, 77SaBa and 57SaBa prevailed, in 2000 races 61SaBa, 57SaBa, 12SaBa, 6SaBa and 77SaBa were prevalent. Data on the reactions of 18 cultivars and advanced lines to six rust isolates of 2000 representing different pathotypes and to one isolate from the collection (race 14) are presented.

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

Biologia ◽  
2008 ◽  
Vol 63 (2) ◽  
Author(s):  
Alena Hanzalová ◽  
Jozef Huszár ◽  
Pavel Bartoš ◽  
Eva Herzová
Keyword(s):  
Leaf Rust ◽  
Resistance Genes ◽  
Field Tests ◽  
Puccinia Triticina ◽  
Near Isogenic Lines ◽  
Wheat Leaf Rust ◽  
Good Resistance ◽  
Isogenic Lines ◽  
Wheat Leaf

AbstractIn 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).

scholarly journals Physiologic specialization of wheat leaf rust (Puccinia triticina Eriks.) in the Slovak Republic in 2005, 2006 and 2008

2010 ◽  
Vol 46 (No. 3) ◽  
pp. 114-121 ◽  
Author(s):  
A. Hanzalová ◽  
J. Huszár ◽  
E. Herzová ◽  
P. Bartoš
Keyword(s):  
Leaf Rust ◽  
Slovak Republic ◽  
Puccinia Triticina ◽  
Near Isogenic Lines ◽  
Wheat Cultivars ◽  
Wheat Leaf Rust ◽  
Wheat Leaf ◽  
Winter Wheat Cultivars ◽  
Low Incidence ◽  
Different Parts

In 2005, 2006 and 2008 the virulence of wheat leaf rust population was studied on Thatcher near-isogenic lines with Lr1, Lr2a, Lr2b, Lr2c, Lr3a, Lr9, Lr10, Lr13, Lr15, Lr17, Lr19, Lr21, Lr23, Lr24, Lr26 and Lr28. Samples of leaf rust (141 in total) were obtained from different parts of Slovakia. Resistance gene Lr9 was effective to all tested isolates except three isolates from 2008. No virulence was found to Lr19 and genes Lr24 and Lr28 were also highly effective. Low incidence of virulence to Lr2a was observed. Sixty-five winter wheat cultivars registered in Slovakia were tested with seven leaf rust isolates in the greenhouse. Cultivar Bona Dea was the most resistant of all.

scholarly journals Wheat leaf rust races/pathotypes in the Czech Republic in 1999–2000

2001 ◽  
Vol 37 (No. 1) ◽  
pp. 10-16 ◽  
Author(s):  
P. Bartoš ◽  
A. Hanzalová ◽  
E. Stuchlíková
Keyword(s):  
Leaf Rust ◽  
Low Frequency ◽  
Near Isogenic Lines ◽  
Wheat Cultivars ◽  
Wheat Leaf Rust ◽  
Time Data ◽  
The Czech Republic ◽  
Wheat Leaf ◽  
Winter Wheat Cultivars ◽  
First Time

In 1999–2000 virulence of the wheat leaf rust population was studied on Thatcher near isogenic lines (NILs) with  Lr1, Lr2a, Lr2b, Lr2c, Lr3, Lr9, Lr10 (only in 2000), Lr11, Lr15, Lr17, Lr19, Lr21, Lr23, Lr24, Lr26 and Lr28. On these NILs 11 pathotypes were determined in 1999, and 18 in 2000. All rust samples were avirulent on Lr9, Lr19, Lr24 and Lr28. There was a relatively low frequency of virulence on Lr1, Lr2a and Lr2b. Most rust samples were virulent on Lr2c, Lr11, Lr15, Lr17, Lr21, Lr23 and Lr26. The identified pathotypes conformed with races 61SaBa, 77SaBa, 2SaBa, 12SaBa, 57SaBa, 6SaBa, 28SaBa, 61and 6. Races 61SaBa, 2SaBa and 77SaBa prevailed in 1999, races 61SaBa and 12SaBa were prevalent in 2000. Race 28SaBa was found for the first time. Data of the reactions to 15 leaf rust isolates of the recently registered winter wheat cultivars Niagara, Vlasta, Sulamit, Record, Ludwig, Apache, Semper, Drifter, Complet, Corsaire, Sepstra and Rialto are presented.

scholarly journals Pathotypes of wheat leaf rust (Puccinia triticina Eriks.) and resistance of registered cultivars in the Czech Republic in 2012–2015

2017 ◽  
Vol 53 (No. 3) ◽  
pp. 122-126 ◽  
Author(s):  
A. Hanzalová ◽  
P. Bartoš ◽  
T. Sumíková
Keyword(s):  
Czech Republic ◽  
Leaf Rust ◽  
Puccinia Triticina ◽  
Near Isogenic Lines ◽  
Wheat Leaf Rust ◽  
Chain Reaction ◽  
The Czech Republic ◽  
Wheat Leaf ◽  
Polymerase Chain ◽  
Different Parts

In 2012–2015 the virulence of the wheat leaf rust (Puccinia triticina Eriks.) population was studied on Thatcher near-isogenic lines with Lr1, Lr2a, Lr2b, Lr2c, Lr3a, Lr9, Lr10, Lr11, Lr13, Lr15, Lr17, Lr19, Lr21, Lr23, Lr24, Lr26 and Lr28. Samples of leaf rust were obtained from different parts of the Czech Republic. A total of 163 wheat leaf rust isolates were analysed. No virulence for the resistance gene Lr9 was found. Virulence for Lr19 was found only in one isolate in 2015. A lower frequency of virulence to Lr24, Lr2a, 2b, 2c and Lr28 was also observed. The presence of Lr10, Lr24, Lr26, Lr28 and Lr37 in registered cultivars was detected by polymerase chain reaction (PCR) molecular markers.

scholarly journals Wheat leaf rust (Puccinia triticina Eriks.) virulence frequency and detection of resistance genes in wheat cultivars registered in the Czech Republic in 2016–2018

2020 ◽  
Vol 56 (No. 3) ◽  
pp. 87-92 ◽  
Author(s):  
Alena Hanzalová ◽  
Veronika Dumalasová ◽  
Ondřej Zelba
Keyword(s):  
Molecular Markers ◽  
Leaf Rust ◽  
Puccinia Triticina ◽  
Near Isogenic Lines ◽  
Wheat Cultivars ◽  
Wheat Leaf Rust ◽  
The Czech Republic ◽  
Lr Genes ◽  
Wheat Leaf ◽  
Virulence Frequency

In 2016–2018 virulence of the Czech wheat leaf rust population was studied on Thatcher near-isogenic lines, carrying different Lr genes, and 130 leaf rust isolates. Virulence to Lr9 was found only sporadically. Virulence frequency to Lr2a, Lr2b, Lr2c and Lr28 was lower than in previous years. All tested isolates were avirulent to Lr19. Lr24 conditioned resistance to majority of isolates. Nineteen recently registered Czech cultivars were tested with six isolates of the pathogen and Lr genes were postulated. Presence of genes Lr1, Lr10, Lr19, Lr24, Lr26, Lr28, Lr34 and Lr37 was tested by molecular markers. Lr37 prevailed, followed by Lr genes 10, 24, 28, 1 and 26; genes Lr19 and Lr34 were not determined.

scholarly journals Wheat leaf rust races/pathotypes in the Czech Republic in 1997–1998

1999 ◽  
Vol 35 (No. 2) ◽  
pp. 51-56
Author(s):  
P. Bartoš ◽  
E. Stuchlíková
Keyword(s):  
Leaf Rust ◽  
Low Frequency ◽  
Near Isogenic Lines ◽  
Wheat Cultivars ◽  
Wheat Leaf Rust ◽  
Time Data ◽  
The Czech Republic ◽  
Wheat Leaf ◽  
Winter Wheat Cultivars ◽  
First Time

In 1997–1998 virulence of the wheat leaf rust population was studied on Thatcher near isogenic lines with Lr1, Lr2a, Lr2b, Lr2c, Lr3. Lr9, Lrll, Lrl5, Lrl7,  Lrl9,  Lr21, Lr23, Lr24, Lr26 and Lr28. On these NILs 11 pathotypes were determined in 1997, and 8 inl998. All rust samples were avirulent onLr9, Lr19, Lr24 and Lr28.There was a relatively low frequency of virulence on Lrl, Lr2a and Lr2b. Most rust samples were virulent on Lr2c, Lr11, Lr15, Lr17, Lr23 and Lr26. All samples were virulent on Lr3 and Lr21. The identified pathotypes conformed with races 61SaBa*, 77SaBa, 2SaBa, 12SaBa, 57SaBa, 6SaBa, 61*, 77 and 6. Races 61SaBa*, 77SaBa and 2SaBa prevailed in 1997, races 61 SaBa*, 77SaBa and 12SaBa were prevalent in 1998. Races 6 and 6SaBa were found for the first time. Data on Lr genes in recently registered winter wheat cultivars are presented.

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