TABLE 1.

Statistical analyses of associations between genetic and phenotypic traits of V. fischeri isolates collected in 2005

Traitχ2df% of cells <5bCramér's VP valueaFisher's exact test P valuea
Bioluminescence level32.92170.71**** (****)**** (****)
Colony pigmentation33.12170.71**** (****)**** (****)
Motility rate57.72170.94**** (****)**** (****)
Growth rate6.82170.32*** (**)*** (*)
Siderophore production4.02170.25* (*)* (*)
  • a The correction of P values for multiple testings was performed by considering all of the data as a family of tests. The P values were analyzed and adjusted according to the method of Hommel (31); corrected values are in parentheses. Ranges of calculated P values: *, P > 0.1; **, 0.1 > P > 0.05; ***, 0.01 < P < 0.05; ****, P < 0.01.

  • b The percentage of cells <5 refers to a common benchmark for the validity of χ2 analysis.