Partial resistance of barley to leafrust, Puccinia hordei. I. Effect of cultivar and development stage on latent period

Euphytica ◽  
1975 ◽  
Vol 24 (1) ◽  
pp. 21-27 ◽  
Author(s):  
J. E. Parlevliet
Keyword(s):  
Latent Period ◽  
Partial Resistance ◽  
Development Stage ◽  
Puccinia Hordei

scholarly journals Specificity of Prehaustorial Resistance to Puccinia hordei and to Two Inappropriate Rust Fungi in Barley

1998 ◽  
Vol 88 (8) ◽  
pp. 856-861 ◽  
Author(s):  
T. J. H. Hoogkamp ◽  
W.-Q. Chen ◽  
R. E. Niks
Keyword(s):  
Latent Period ◽  
Recombinant Inbred ◽  
Partial Resistance ◽  
Recombinant Inbred Lines ◽  
Inbred Lines ◽  
Rust Fungi ◽  
Puccinia Hordei ◽  
High Level ◽  
Early Abortion ◽  
Two Populations

To elucidate the specificity of prehaustorial resistance to inappropriate rust fungi, we studied two populations of recombinant inbred lines of barley that segregated for partial resistance (PR) to Puccinia hordei and for the resistance to the inappropriate rust species P. recondita f. sp. tritici and P. hordei-murini. PR to P. hordei is prehaustorial and nonhypersensitive, and its level can be assessed accurately by measuring the latent period of the fungus. The resistance to the inappropriate rust species is a combination of prehaustorial (nonhypersensitive) and posthaustorial (hypersensitive) mechanisms. The amount of nonhypersensitive, early abortion of P. recondita f. sp. tritici and P. hordei-murini sporelings reflects the degree of prehaustorial defense to the two inappropriate rust species. All lines showing a long latent period of P. hordei also had a relatively high level of early abortion of the growth of P. recondita f. sp. tritici and P. hordei-murini. This indicates that genes for PR to P. hordei are also effective against these two inappropriate rust species. The reverse was not necessarily true; some lines showing a high level of early abortion of P. recondita f. sp. tritici and P. hordei-murini had a low level of PR to P. hordei. Moreover, lines with a similar level of prehaustorial resistance to P. recondita f. sp. tritici could differ considerably in their prehaustorial resistance to P. hordei-murini. This indicates that genes for prehaustorial resistance may exhibit rust species specificity.

scholarly journals A high-density consensus map of barley to compare the distribution of QTLs for partial resistance to Puccinia hordei and of defence gene homologues

2006 ◽  
Vol 114 (3) ◽  
pp. 487-500 ◽  
Author(s):  
T. C. Marcel ◽  
R. K. Varshney ◽  
M. Barbieri ◽  
H. Jafary ◽  
M. J. D. de Kock ◽  
...  
Keyword(s):  
Partial Resistance ◽  
High Density ◽  
Puccinia Hordei ◽  
Consensus Map

Variation in partial resistance to barley leaf rust (Puccinia hordei) and agronomic characters of Ethiopian landrace lines

Euphytica ◽  
2007 ◽  
Vol 158 (1-2) ◽  
pp. 139-151 ◽  
Author(s):  
Getaneh Woldeab ◽  
Chemeda Fininsa ◽  
Harjit Singh ◽  
Jonathan Yuen ◽  
Jose Crossa
Keyword(s):  
Leaf Rust ◽  
Partial Resistance ◽  
Puccinia Hordei ◽  
Agronomic Characters ◽  
Barley Leaf Rust ◽  
Barley Leaf
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