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. 2010 Dec 1;278(1714):2011–2017. doi: 10.1098/rspb.2010.2208

Table 3.

Goodness-of-fit tests (with Williams correction) comparing observed seed ploidy distributions from mixed-ploidy pollinations (2x + 4xest or 2x + 4xneo) of Chamerion angustifolium to random expectations. The analyses were based on raw counts (table 1) and on data corrected for early triploid mortality.

maternal ploidy pollen mixture uncorrected
corrected
d.f. χ2 p d.f. χ2 p
2x 2x + 4xest 2 16.77 0.0002 1 6.44 0.0112
2x + 4xneo 1 36.63 <0.0001 1 19.18 <0.0001
4xest 2x + 4xest 1 85.98 <0.0001 1 106.6 <0.0001
2x + 4xneo 2 32.81 <0.0001 1 12.61 0.0004