Table 1.

Arabidopsis thaliana seed size resulting from combinations of different parental ploidies (adapted from Scott et al., 1998)

Interploidy cross (maternal × paternal)	6x : 2x	4x : 2x	2x : 2x	2x : 4x	2x : 6x
Maternal : paternal ratio in endosperm	6 : 1	4 : 1	2 : 1	2 : 2	2 : 3
Seed size (indicated by number of dots)	•	••	••••	••••••	X
Viability	Lethal	Viable	Viable	Viable	Lethal