Table 1.

Penetrance of the fertilization-independent endosperm phenotype in the female gametophyte

Ovule genotype (ecotype)	Multinucleate central cells, %	Gametophyte penetrance
Wild type	0	—
f644/+ (Ler)	7.5	15.0
f644/f644 (Ler)	18.6	18.6
f644/+ (Col)	10.3	20.6
f644/+ (WS)	1.5	3.0
emb173/+ (WS)	1.8	3.6

Multinucleate central cells had 3 or more nuclei. Nuclei were counted 6 days after emasculation. Number of ovules checked were: Landsberg erecta (Ler), 515; Columbia glabrous1 (Col), 283; Wassilewskija (WS), 1739; f644/+ (Ler), 273; f644/f644 (Ler), 613; f644/+ (Col), 145; f644/+ (WS), 861; emb173/+ (WS), 954.