Segregation analysis.

1 Genotypes are given in % of the total germinated seedlings.2 Standard deviation is given in case more than one individual cross has been analyzed.3 The female partner of the cross is always indicated first. Crosses have been performed with either wild type lines or plants heterozygous for fie and/or cdka;1, referred to as fie and cdk, respectively.4 n.a. = not applicable.5 n.d. = not determined.6 Consistent with previous studies, the transmission of cdka;1 from the paternal side was found to be approximately 9% indicating successful wild-type like double fertilization. These cases of double fertilization would lead in crosses with fie as a female partner to over-proliferation of the endosperm and seed abort.7 Number of plants analyzed.