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Table 4 Contingency χ2 tests for differences in genotype frequencies between Phaeosphaeria nodorum collections made from the same host treatment at different sampling times.

From: Effect of hosts on competition among clones and evidence of differential selection between pathogenic and saprophytic phases in experimental populations of the wheat pathogen Phaeosphaeria nodorum

  Pair-wise comparisons Multi-population comparisons
  2004A vs. 2004B 2004B vs. 2005A 2004A vs. 2005A  
Levis 10.16 (7) 25.02 (8)*** 17.50 (7) ** 32.37 (16) **
Runal 16.28 (7)* 10.82 (6) 11.82 (7) 24.95 (14)*
Mixture 10.87 (7) 10.97 (8) 10.38 (6) 18.26 (16)
Tamaro 17.80 (8)* 17.25 (7)** 15.87 (8) * 30. 13 (16)*
Tirone 15.80 (8)* 15.60 (8)* 19.54 (8) ** 31.64 (16) **
  1. Values in bold font are significant after Bonferroni correction at a global alpha of 0.05 (p-value of 0.05/15 = 0.0032) and values in parenthesis are degrees of freedom. A Bonferroni correction was not applied for the multi-population analysis.
  2. * Significant at p = 0.05 before Bonferroni correction
  3. ** Significant at p = 0.01 before Bonferroni correction
  4. *** Significant at p = 0.001 before Bonferroni correction