Phenotypic and molecular characterization of a set of tropical maize inbred lines from a public breeding program in Brazil

Table 1 Best linear unbiased prediction estimates of ranges and means, estimates of variance components due to inbred lines (\({\widehat{{\upsigma }}}_{\text{G}}^{2}\)) and inbred lines x environments interaction (\({\widehat{{\upsigma }}}_{\text{G}\text{E}}^{2}\)), broad-sense heritability estimates (\({\widehat{\text{h}}}_{\stackrel{-}{\text{X}}}^{2}\)) and coefficient of variation (CV%) for 18 traits measured in this set of tropical maize lines across four environments

Traits¹	Min.	Mean	Max.	\({\widehat{{\upsigma }}}_{\text{G}}^{2}\)	\({\widehat{{\upsigma }}}_{\text{G}\text{E}}^{2}\)	\({\widehat{\text{h}}}_{\stackrel{-}{\text{X}}}^{2}\)	CV%
DTP	66.2	72.8	80.8	9.1***^2/	0.5^ns	0.79	2.5
DTS	65.8	73.0	80.1	9.3***	0.6^ns	0.76	2.7
SPAD	30.3	44.1	55.0	25.8***	1.5^ns	0.64	11.9
LL	60.2	76.3	96.6	39.1***	6.8^ns	0.58	9.2
LW	7.3	9.3	12.7	0.8***	0.1*	0.67	8.7
LA	401.7	529.9	710.3	3229.0***	712.2^ns	0.53	13.4
PH	102.1	136.8	170.2	249.3***	21.1*	0.75	8.8
EH	40.5	71.7	100.6	133.5***	13.7***	0.76	11.9
SD	17.4	21.3	26.1	3.4***	0.3^ns	0.59	9.8
BENN	5.5	7.1	9.4	0.5***	0.1^ns	0.66	9.8
AENN	4.4	5.9	7.4	0.3***	0.0^ns	0.68	8.6
EPP	0.8	1.1	1.4	0.0***	0.0^ns	0.44	18.3
EL	10.1	13.1	16.9	1.8***	0.3*	0.67	8.0
NKR	9.7	13.9	21.9	3.4***	0.2^ns	0.76	8.8
ED	30.5	37.5	45.2	7.5***	1.8***	0.69	5.1
CD	16.0	23.4	28.8	5.3***	0.3^ns	0.76	6.4
TKW	158.7	239.0	350.1	1314.6***	335.0***	0.71	9.8
GY	1028.8	2263.3	3605.9	289,626***	94,102***	0.47	28.6

^1/DTP days to pollen (days), DTS days to silking (days), SPAD ear leaf chlorophyll concentration, LL leaf length (cm), LW leaf width (cm), LA leaf area (cm²), PH plant height (m), EH ear height (m), SD stalk diameter (mm), BENN bellow ear node number, AENN above ear node number, EPP number of ears per plant, EL ear length (cm), NKR number of kernel rows, ED ear diameter (mm), CD cob diameter (mm), TKW one thousand kernel weight (g), and grain yield (GY, g kg^− 1)
^2/*** Significant at P = 0.01, ** significant at P = 0.05, * significant at P = 0.10 and ^ns not significant by the likelihood ratio test

ISSN: 1471-2164