BMC Plant Biology

Table 1 Mean squares from the combined analyses of variance in the RILs under four environments and the IF₂ population across three environments

From: Genetic dissection of yield-related traits and mid-parent heterosis for those traits in maize (Zea mays L.)

Trait^a	Population	Gen^b	Env^b	Rep (Env)^b	Gen × Env^b	h² (%)^c	C. I (%)^d
EWPE	RIL	1059.24^**	472,851.69^**	0.04	397.37^**	62.5	55.6–68.2
EWPE	IF₂	2055.73^**	1,080,285.18^**	24.60^**	445.28^**	78.3	74.2–81.7
CWPE	RIL	65.39^**	6542.52^**	57.93^**	17.89**	72.6	67.6–76.8
CWPE	IF₂	62.46^**	8119.14^**	25.87^**	14.63^**	76.6	72.2–80.2
EL	RIL	18.86^**	293.57^**	0.17	2.65^**	85.9	83.5–87.9
EL	IF₂	9.66^**	959.04^**	6.97^**	1.33^**	86.2	83.6–88.3
ED	RIL	41.48^**	5547.70^**	0.08^**	11.97^**	71.1	66.2–75.2
ED	IF₂	23.54^**	5304.38^**	8.90^**	6.01	74.5	69.7–78.4
CD	RIL	26.37^**	4715.00^**	7.81	7.55^**	71.3	66.4–75.4
CD	IF₂	14.27^**	461.95^**	1.6	4.7	67.1	60.9–72.1
RN	RIL	9.73^**	63.01^**	0.15	0.87^**	91.1	89.5–92.3
RN	IF₂	5.40^**	74.82^**	0.1	0.5^**	90.8	89.1–92.2
KNPR	RIL	103.85^**	16,419.65^**	8.330	28.42^**	72.6	67.6–76.8
KNPR	IF₂	73.69^**	12,860.29^**	1.89	19.65^**	73.3	68.3–77.4
KWPE	RIL	740.61^**	195,608.04^**	152.290	290.12^**	60.8	53.9–66.5
KWPE	IF₂	1429.09^**	833,331.84^**	28.24^**	315.94^**	77.9	73.8–81.3
RKP	RIL	0.05^**	2.62^**	0.00	0.01^**	77.7	73.8–80.9
RKP	IF₂	0.00^**	0.54^**	0.68	0.00^**	71.3	66.0–75.7

^aEWPE Ear weight per ear, CWPE Cob weight per ear, EL Ear length, ED Ear diameter, CD Cob diameter, RN Row number, KNPR Kernel number per ear, KWPE Kernel weight per ear, RKP the ratio of kernel production
^bGen Genotype, Env Environment, Rep (Env) Replication nested within the environment, Gen × Env Genotype × environment interaction
^ch² Broad-sense heritability
^dC. I the confidence interval of broad-sense heritability
^*Significant at p < 0.05 and ^** significant at p < 0.01

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