Isolate-specific QTLs of resistance to leaf stripe (Pyrenophora graminea) in the 'Steptoe' × 'Morex' spring barley cross

2003 ◽  
Vol 106 (4) ◽  
pp. 668-675 ◽  
Author(s):  
L. Arru ◽  
E. Francia ◽  
N. Pecchioni
Author(s):  
M. B. Ellis

Abstract A description is provided for Pyrenophora graminea. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Barley and other Hordeum spp. Also, occasionally, on oats, wheat and rye. DISEASE: Causes leaf stripe of barley. Severe seedling infection can cause stunting and post-emergence death, but symptoms are not usually apparent until later, when long, chlorotic or yellow stripes on leaves and sheaths appear. Most leaves of a diseased plant are usually affected. Dark brown streaks develop later in the stripes, which eventually dry out and cause leaf shedding. Ears may not emerge or be deformed and discoloured. Grain production by infected plants is severely restricted. GEOGRAPHICAL DISTRIBUTION: Widespread distribution; occurs in most barley-growing areas of the world. TRANSMISSION: Seed-borne (49, 1342) usually by mycelium in the pericarp. Perithecia are uncommon, but overwintering sclerotia on crop debris have been reported from Russia (42, 13). Secondary infection by conidia is apparently important only for floral infection and subsequent seed contamination.


2002 ◽  
Vol 38 (SI 1 - 6th Conf EFPP 2002) ◽  
pp. S104-S107
Author(s):  
T.N. Erokhina ◽  
R.A. Zinovkin ◽  
D.-E. Lesemann ◽  
W. Jelkmann ◽  
A.A. Agranovsky

A total of 19 Iranian native barley cultivars were in artificial infection experiments tested for resistance against isolate<br />19 of the leaf stripe fungs, Pyrenophora graminea. The cultivar Eram was immune against isolate 19 and the cultivars<br />Jonob, Makoy, C2, showed high resistance with less than 6% plant infected, the cultivars Zarjo, Valfajr, Reyhan, Karun,<br />Karun × Kavir were the most susceptible cultivars.


1996 ◽  
Vol 93 (1-2) ◽  
pp. 97-101 ◽  
Author(s):  
N. Pecchioni ◽  
P. Faccioli ◽  
H. Toubia-Rahme ◽  
G. Val� ◽  
V. Terzi

2002 ◽  
Vol 38 (SI 1 - 6th Conf EFPP 2002) ◽  
pp. 170-173
Author(s):  
H.R. Etebarian

A total of 19 Iranian native barley cultivars were in artificial infection experiments tested for resistance against isolate<br />19 of the leaf stripe fungs, Pyrenophora graminea. The cultivar Eram was immune against isolate 19 and the cultivars<br />Jonob, Makoy, C<sub>2</sub>, showed high resistance with less than 6% plant infected, the cultivars Zarjo, Valfajr, Reyhan, Karun,<br />Karun × Kavir were the most susceptible cultivars.


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