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Dependence of infrageneric polyploid incidence on the minimum number of chromosomes reported for angiosperm genera (generic base count). Shown are mean percentages (± SE) of polyploid species within genera. Means with different letters are significantly different [P < 0.05 when evaluated within a logistic model and with nonparametric (rank sums) tests]. (N (l − r) = 320, 323, 370, 354).
