Germination and appressorium formation of wheat leaf rust on susceptible, partially resistant and resistant wheat seedlings and on seedlings of other Gramineae

1989 ◽  
Vol 95 (2) ◽  
pp. 65-71 ◽  
Author(s):  
Th. Jacobs
Keyword(s):  
Leaf Rust ◽  
Wheat Leaf Rust ◽  
Appressorium Formation ◽  
Wheat Seedlings ◽  
Wheat Leaf

scholarly journals Autoinfection in wheat leaf rust epidemics

2008 ◽  
Vol 177 (4) ◽  
pp. 1001-1011 ◽  
Author(s):  
Christian Lannou ◽  
Samuel Soubeyrand ◽  
Lise Frezal ◽  
Joël Chadœuf
Keyword(s):  
Leaf Rust ◽  
Wheat Leaf Rust ◽  
Wheat Leaf

THE INHERITANCE OF RESISTANCE IN RYE TO Puccinia recondita f. sp. secalis and f. sp. tritici

1984 ◽  
Vol 64 (3) ◽  
pp. 511-519 ◽  
Author(s):  
G. L. C. MUSA ◽  
P. L. DYCK ◽  
D. J. SAMBORSKI
Keyword(s):  
Disease Resistance ◽  
Leaf Rust ◽  
Secale Cereale ◽  
Single Gene ◽  
Inbred Lines ◽  
Puccinia Recondita ◽  
Wheat Leaf Rust ◽  
Susceptible Parent ◽  
Seedling Resistance ◽  
Wheat Leaf

The inheritance of seedling resistance to isolate RLR 213/78 of rye leaf rust (Puccinia recondita f. sp. secalis) and race 30 of wheat leaf rust (P. recondita f. sp. tritici Rob.) was investigated in six inbred lines of rye (Secale cereale). Inbred line UM8116 was used as the susceptible parent in crosses. Inbred lines UM8003, UM8071 and UM8301 each have a single gene and UM8336 and UM8340 each have two genes for resistance to rye leaf rust. For resistance to wheat leaf rust UM8071 has a single gene, UM8003 and UM8340 each have two genes and UM8301 and UM8336 each have three genes. UM8295 is heterogeneous for reaction to both rusts. One of the genes in UM8340 may condition resistance to both rusts. The genes for resistance to RLR 213/78 appear to be independently inherited while some of the genes conferring resistance to race 30 may be identical or very closely linked. The potential of rye as a source of disease resistance for wheat and triticale improvement is discussed.Key words: Secale cereale, disease resistance, wheat leaf rust

Robust fitting of fluorescence spectra for pre-symptomatic wheat leaf rust detection with Support Vector Machines

2011 ◽  
Vol 79 (2) ◽  
pp. 180-188 ◽  
Author(s):  
Christoph Römer ◽  
Kathrin Bürling ◽  
Mauricio Hunsche ◽  
Till Rumpf ◽  
Georg Noga ◽  
...  
Keyword(s):  
Support Vector Machines ◽  
Leaf Rust ◽  
Fluorescence Spectra ◽  
Support Vector ◽  
Wheat Leaf Rust ◽  
Robust Fitting ◽  
Vector Machines ◽  
Wheat Leaf

scholarly journals Effect of Resistance Inducing Chemicals on Wheat Leaf Rust Caused by Puccinia triticina

2013 ◽  
Vol 41 (2) ◽  
pp. 121-133
Author(s):  
Nour El-Din Soliman ◽  
Magdy Saber ◽  
Alaa Abd-Elaziz ◽  
Ibrahim Imbabi
Keyword(s):  
Leaf Rust ◽  
Puccinia Triticina ◽  
Wheat Leaf Rust ◽  
Wheat Leaf

Wheat leaf rust.

2012 ◽  
pp. 33-62 ◽  
Author(s):  
B. McCallum ◽  
C. Hiebert ◽  
J. Huerta-Espino ◽  
S. Cloutier
Keyword(s):  
Leaf Rust ◽  
Wheat Leaf Rust ◽  
Wheat Leaf

scholarly journals Genetic differentiation of the wheat leaf rust fungusPuccinia triticinain Europe

2012 ◽  
Vol 62 (1) ◽  
pp. 21-31 ◽  
Author(s):  
J. A. Kolmer ◽  
A. Hanzalova ◽  
H. Goyeau ◽  
R. Bayles ◽  
A. Morgounov
Keyword(s):  
Genetic Differentiation ◽  
Leaf Rust ◽  
Wheat Leaf Rust ◽  
Wheat Leaf

Molecular and virulence diversity and linkage disequilibria in asexual and sexual populations of the wheat leaf rust fungus, Puccinia recondita

Genome ◽  
1998 ◽  
Vol 41 (6) ◽  
pp. 832-840 ◽  
Author(s):  
J Q Liu ◽  
J A Kolmer
Keyword(s):  
Leaf Rust ◽  
Rust Fungus ◽  
Field Population ◽  
Puccinia Recondita ◽  
Wheat Leaf Rust ◽  
Asexual Population ◽  
Sexual Population ◽  
Linkage Disequilibria ◽  
Wheat Leaf ◽  
Virulence Diversity

An asexual field population and a sexually derived population of the wheat leaf rust fungus, Puccinia recondita, were examined and compared for diversity and linkage disequilibria between virulence and molecular phenotypes. Isolates in both populations were tested for virulence to 20 Thatcher wheat lines near-isogenic for leaf rust resistance genes, and for random amplified polymorphic DNA (RAPD) variation using 10 DNA primers. In the asexual field population, 36 virulence phenotypes and 14 RAPD phenotypes were identified in 43 isolates. In the sexual population, 87 virulence phenotypes and 79 RAPD phenotypes were identified in 104 isolates. Linkage disequilibria was less in the sexual population compared to the asexual field population. Virulence-RAPD phenotype pairs (110 in total) were directly compared between the two populations for association. In the asexual population, 39 virulence-RAPD phenotype pairs were associated (P < 0.05), compared with 18 pairs in the sexual population. Linkage was not evident, as some residual disequilibria remained between virulence and RAPD phenotypes. In the asexual population 18 RAPD phenotype pairs were associated, compared with 9 pairs in the sexual population. The sexual population was also tested for RAPD variation with an additional six primers. In the sexual population, amplification sites of four different primers were tightly linked which indicated a chromosomal segment in P. recondita may not readily undergo recombination. Disequilibria between virulence and RAPD phenotypes in field populations of P. recondita in Canada is maintained by asexual reproduction.Key words: Puccinia recondita, molecular diversity, virulence diversity, linkage disequilibria, wheat leaf rust.

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