Table 6. Total Seed Number and Seed Weight from Self-Pollination of Backcross 3 Plants Containing or Lacking the Designated Transgenic Event and Containing or Lacking the Endogenous Functional Sh2 Allele.

Event	Parental Genotype	Seed No.	Ratio, Seed No.	Seed Weight	Ratio, Seed Weight
97	Addition	344**	1.32
	Substitution	319	1.23	43.37	1.07
	Control	260		40.50
	Mutant	294	1.13
73	Addition	348**	1.28
	Substitution	289	1.06	50.31	1.09
	Control	273		45.98
	Mutant	290	1.06
133	Addition	335	1.03
	Substitution	352	1.08	47.89	1.09
	Control	326		43.85
	Mutant	318	0.98
114	Addition	332	1.12
	Substitution	315	1.06	45.89	1.03
	Control	297		44.71
	Mutant	275	0.92
286	Addition	341**	1.30
	Substitution	332**	1.27	48.20*	1.18
	Control	262		40.75
	Mutant	294	1.12
25	Addition	349*	1.20
	Substitution	317	1.09	49.76	1.11
	Control	290		44.85
	Mutant	307	1.06
Ave	Addition	341**	1.18
	Substitution	319**	1.10	48.08**	1.09
	Control	289		44.07
	Mutant	294	1.02

The four genotypes are defined in Figure 1. Plants were grown in Citra, Florida, in the spring of 2006. Total seed numbers and seed weight marked with asterisks designate significant differences at the 5% (*) or 1% (**) level from the cognate nontransgene control. The ratio is the seed number or seed weight of each of the two transgene-containing genotypes as well as the genotype lacking any functional Sh2 alleles divided by the seed number or seed weight of the nontransgenic control containing the functional endogenous Sh2 allele. Averages and ratios of all events were calculated from all individual data. In total, 761 ears and 194,916 kernels were manually scored.