Relationship, evolutionary fate and function of two maize co-orthologs of rice GW2associated with kernel size and weight

Table 4 Mean squares of ANOVA and descriptive statistics and correlation coefficients for four yield-related traits

Category	Source of variation	DF	KL (mm)	KW (mm)	KT (mm)	HKW (g)
ANOVA	Year	2	52.09**	0.45**	33.78**	755.90**
	Genotype	120	1.84**	2.40**	0.87**	72.02**
	Replication (Year)	3	0.08	0.18	0.13	84.25**
	Year × Genotype	222 (215)^a	0.41**	0.23**	0.18**	16.59**
	Error	287 (298)^a	0.11	0.09	0.07	6.45
Descriptive	Range		6.48-11.58	5.65-10.57	3.14-6.73	7.87-42.86
statistics	Mean ± SD		8.90 ± 0.84	8.12 ± 0.76	4.70 ± 0.60	22.50 ± 4.99
Correlation	KL (mm)			0.16	-0.15	0.37**
coefficients^b	KW (mm)		0.17**		0.51**	0.78**
	KT (mm)		-0.09*	0.36**		0.62**
	HKW (g)		0.26**	0.68**	0.58**

DF, degree of freedom; HKW, one-hundred kernel weight; KL, kernel length; KT, kernel thickness; KW, kernel width; **, P < 0.01; *, P < 0.05
^a Because the phenotypic values for some lines were missing either for kernel size or for kernel weight, the DF are different. The numbers in parentheses indicate the DF for HKW and the numbers outside parentheses indicate the DF for KL, KT and KW
^b The numbers above the diagonal are genetic correlation coefficients and the numbers below the diagonal are phenotypic correlation coefficients

ISSN: 1471-2229