Table 1 Segregation ratios of F2 progeny and F2:3 families from the crosses AC Morgan/Pc45 and Kasztan/Pc45 when inoculated with crown rust isolate CR258# (race NTGG*)
PopulationGenerationResistantSegregatingSusceptibleRatioχ2P-Value
AC Morgan/Pc45F2178683:10.920.34 ns
F2:358120681:2:10.960.62 ns
Kasztan/Pc45F257193:10.001.00 ns
F2:31836191:2:10.040.98 ns
  • ns = non-significant; #Designated crown rust isolate numbers at Morden Research and Development Centre; *Race designation according to the standard North American system of nomenclature for Puccinia coronata (Chong et al. 2000) using 16 primary crown rust differentials (set 1: Pc40, 45, 46, 50; set 2: Pc38, 39, 48, 68; set 3: Pc51, 52, 58, 59; set 4: Pc54, 56, 62, 64) and three supplemental differentials (Pc91, 94, 96).