TY  - PRO
AU  - Brown,J.K.M.
AU  - Arraiano,L.S.
AU  - Brading,P.A.
AU  - Forrer,H.R.
AU  - Foster,E.M.
AU  - Ginkel,M.van|McNab,A.|Krupinsky,J.
AU  - Hecker,A.
AU  - Jenny,E.
AU  - Kema,G.H.J.
AU  - Verstappen,E.C.P.
ED  - Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
TI  - Field resistance of wheat to Septoria tritici leaf blotch, and interactions with Mycosphaerella graminicola isolates
SN  - 970-648-035-8
U1  - 632.4 
PY  - 1999///
CY  - Mexico, DF (Mexico)
PB  - CIMMYT
KW  - Disease resistance
KW  - AGROVOC
KW  - Fungicides
KW  - Mycosphaerella graminicola
KW  - Netherlands
KW  - Plant diseases
KW  - Septoria
KW  - United Kingdom
KW  - Triticum
KW  - CIMMYT
N2  - The resistance of 71 varieties of bread wheat to six isolates of Mycosphaerella graminicola was studied in field trials in the Netherlands, Switzerland, and the UK, carried out over three years. There was a wide range of Septoria tritici infection. Some varieties had especially good resistance, including lines from Europe (especially Switzerland) and Latin America. Many interactions between varieties and isolates were detected. In particular, 27 varieties of diverse origins were specifically resistant to the isolate IPO323. Variety-by-isolate interactions were stable over years and locations. The existence of these interactions and the fact that they are stable over environments implies that certain widely used resistances to Septoria tritici might break down through the evolution of specific virulence in the fungus. Breeders should take these interactions into account in their efforts to develop varieties with durable resistance
ER  -