.getAlternative: no visible global function definition for 'is'
.getNull: no visible global function definition for 'is'
.getNull: no visible global function definition for 'terms'
.getNull: no visible global function definition for 'model.offset'
.getNull: no visible global function definition for 'model.frame'
.getNull: no visible global function definition for 'model.matrix'
.getXY: no visible global function definition for 'is'
.getXY: no visible global function definition for 'terms'
.getXY: no visible global function definition for 'formula'
.getXY : <anonymous>: no visible global function definition for 'lm'
.getXY : <anonymous>: no visible global function definition for 'coef'
.makeContrasts: no visible global function definition for 'model.frame'
.makeContrasts: no visible global function definition for 'terms'
.makeContrasts: no visible global function definition for
  'model.matrix'
draw: no visible global function definition for 'pdf'
draw: no visible global function definition for 'par'
draw: no visible global function definition for 'plot'
draw: no visible global function definition for 'abline'
draw: no visible global function definition for 'legend'
draw: no visible global function definition for 'dev.off'
fdrOrd: no visible global function definition for 'new'
kfweOrd: no visible global function definition for 'qnbinom'
kfweOrd: no visible global function definition for 'new'
lsd.test: no visible global function definition for 'new'
lsd.test: no visible global function definition for 'pf'
step.adj: no visible global function definition for 'is'
step.adj: no visible global function definition for 'glm'
step.adj: no visible global function definition for 'step'
step.adj: no visible global function definition for 'anova'
step.adj : redo: no visible global function definition for 'update'
step.adj : redo: no visible global function definition for 'step'
step.adj : redo: no visible global function definition for 'anova'
Undefined global functions or variables:
  abline anova coef dev.off formula glm is legend lm model.frame
  model.matrix model.offset new par pdf pf plot qnbinom step terms
  update
Consider adding
  importFrom("grDevices", "dev.off", "pdf")
  importFrom("graphics", "abline", "legend", "par", "plot")
  importFrom("methods", "is", "new")
  importFrom("stats", "anova", "coef", "formula", "glm", "lm",
             "model.frame", "model.matrix", "model.offset", "pf",
             "qnbinom", "step", "terms", "update")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').