The virulence spectrum of Puccinia graminis f.sp. tritici originated from grasses
2000
Staletic, M. | Stojanovic, S. (Institut za istrazivanja u poljoprivredi Srbija, Kragujevac (Serbia and Montenegro). Centar za strna zita)
The virulence spectrum of fungal population of Puccinia graminis tritici originated from grasses was shown in the present paper. Investigations were carried out in the Center for Small Grains, Kragujevac (Serbia, Serbia&Montenegro), during in the period 1991-1992. The isogenic lines with well-known Sr genes for resistance were used. Seven pathotypes (BBB, DBB, RHK, RHS, LGB, THK, QGF) were isolated from grasses in the first and five (BBB, RRK, BBD, NTH, TNT) in the second year of investigations. The pathotype BBB was dominat in both years. Neither of Sr genes was completely efficient to pathotypes from grasses while Sr33 was recorded the most efficient one. Population of Puccinia graminis tritici, the causal agent of stem rust, was characterized by rather low virulence, the result of which was occurrence of variability, but in static form.
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