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Table 3 Phylogenetically independent contrasts (PICs) analysis of the relationship between genome size and spore length

From: Genome size expansion and the relationship between nuclear DNA content and spore size in the Asplenium monanthes fern complex (Aspleniaceae)

Branch transformation method Phylogenetic signal (κ) PIC standardisation
GS SL GS SL
  κ P κ P r 2 P r 2 P
Log 2.500 0.001 0.773 0.001 0.314 0.024 0.207 0.076
Pagel 2.814 0.001 0.800 0.001 0.196 0.008 0.021 0.408
Nee 2.317 0.001 0.988 0.001 0.176 0.014 0.019 0.434
Grafen 1.131 0.001 0.273 0.003 0.035 0.289 0.080 0.090
  1. DNA amount values were log transformed prior to analysis. GS = genome size, and SL = spore length. 1C or 2C DNA values were used depending on the reproductive mode: 2C-values are used for apomictic taxa, and 1C-values are used for sexual taxa. Results are given for four branch length transformation methods, as discussed in the Materials and Methods. Significant P values are given in bold.