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Table 2 Chi squared analysis of barley populations for tests for allelism with RphCantala

From: Genetic mapping of a new race specific resistance allele effective to Puccinia hordei at the Rph9/Rph12locus on chromosome 5HL in barley

Population Genes involved Pop No. of F 3families Genetic ratio P value Chi square
    NSR Seg NSS    
Cantala/Triumph RphC/Rph12 F3 208    No segregation# <0.0001 267.429a
Cantala/PI531849 RphC/Rph13 F3 69 71 10 7:8:1 0.807 0.429a
Cantala/Estate RphC/Rph3 F3 112 87 18 7:8:1 0.012 8.779a
Cantala/Cebada Capa RphC/Rph7 F3 72 107 8 7:8:1 0.117 4.290a
Stirling/CI9214 RphC/Rph1 DH 121   137 1:1 0.319 0.992b
  1. Maximum recombination r = 1.1 cM (P = 0.01) and r = 0.7 cM (P = 0.05) calculated from Hanson [32] based on the hypothesis that the two loci are different.
  2. #Chi squared values are denoted a and b for 2 and 1 degrees of freedom, respectively.