Table 1.

Rosette diameter of wild-type, homozygous ddm1 mutants, and hybrids

Sample	Date, DAS	DDM1/DDM1, cm	ddm1/ddm1, cm	Ratio of homozygous ddm1 relative to DDM wild type	Ratio of heterosis vs. MPV between to ddm1/ddm1 and DDM1/DDM1 hybrids
Col	14	1.73 ± 0.02	1.67 ± 0.03	0.97
	18	2.81 ± 0.03	2.69 ± 0.05	0.96
C24	14	1.55 ± 0.02	1.56 ± 0.02	1.01
	18	2.33 ± 0.04	2.37 ± 0.05	1.02
C24 × Col	14	2.33 ± 0.01	2.11 ± 0.03	0.91	0.92
	18	3.46 ± 0.03	2.75 ± 0.04	0.79	0.81