Table 3. Test for parental-like fitness components of heteroploid crosses of Jacobaea carniolica.

Comparison of treatments1	no. total2	coefficient ± SE	z- or t- value		p-value3
Seed viability
2x4x ↔ 4x4x	9569/75	−2.37±0.31	−7.69		<0.001
4x2x ↔ 4x4x	11492/73	−2.41±0.34	−7.00		<0.001
2x6x ↔ 6x6x	10112/78	−3.14±0.37	−8.53		<0.001
6x2x ↔ 6x6x	11514/74	−2.79±0.46	−6.12		<0.001
Survival of hybrid seedlings
2x4x ↔ 4x4x	469	−0.70±0.34	−2.09		0.037
4x2x ↔ 4x4x	478	−0.38±0.28	−1.35		0.177
2x6x ↔ 2x2x	–	–	–		–
6x2x ↔ 2x2x	437	−2.24±0.82	−2.72		0.007
4x6x ↔ 4x4x	596	1.56±0.30	5.22		<0.001
4x6x ↔ 6x6x	616	0.15±0.33	0.44		0.659
Time to primary leaf in hybrid seedlings
2x4x ↔ 2x2x	220/55	−0.02±0.07	0.32		0.748
4x2x ↔ 4x4x	137/48	−0.13±0.08	−1.62		0.106
Size of hybrid seedlings
2x4x ↔ 2x2x	165/52	−0.59±0.35	1.69	0.094
4x2x ↔ 4x4x	126/50	−0.78±0.33	−2.37	0.020
4x6x ↔ 4x4x	253/61	0.39±0.24	1.59	0.114

¹maternal parent is given first; calculated only for significant comparisons in Table 2;

²number of progeny and number of pollinated plants used in the (generalised) linear mixed-effects models;

³p-values <0.05 are given in bold.