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.