Skip to main content

Table 1 Variance components and broad-sense heritability estimates for 11 quality traits measured in 132 maize inbred lines

From: Genome-wide association study for kernel composition and flour pasting behavior in wholemeal maize flour

Trait abbreviationa

Variance componentsb

h2 heritability c(%)

σ 2 p

σ 2 g

σ 2 g×y

σ 2 error

 

PR

1.253

0.733

0.074

0.447

58

FI

0.045

0.029

0.001

0.014

65

FT

0.050

0.028

0.004

0.018

55

STLd

5.636

3.064

0.000

2.572

54

SIZELd

615.987

238.055

46.222

331.710

39

PV

1.14E6

6.33E5

3.37E5

1.70E5

56

TV

2.74E5

1.19E5

3.77E4

1.18E5

43

FV

1.64E6

6.74E5

3.54E5

6.08E5

41

BD_SqRte

167.218

103.016

36.195

28.007

62

SB1

9.53E5

3.29E5

1.58E5

4.67E5

34

SB2

8.22E5

2.51E5

1.89E5

3.82E5

31

  1. Quality traits measured in wholemeal maize flour from each of the 132 maize inbred lines evaluated in two growing seasons (2011 and 2012)
  2. aTraits: PRProtein, in %; FIFiber, in %; FTFat, in %; STLStarch, in %; SIZELMean particle size, in μm; PVPeak (maximum) viscosity, in cP; TVTrough (minimum) viscosity, in cP; FVFinal viscosity, in cP; BD_SqRtBreakdown, in cP; SB1Setback from trough viscosity, in cP; SB2Setback from peak viscosity, in cP
  3. b Variance attributed to the individual terms of the statistical model: σ 2 p corresponds to the phenotypic variance; σ 2 g corresponds to the genotypic variance; σ 2 g×y corresponds to the interaction between inbred lines and growing seasons variance; σ 2 error (%) corresponds to the variance attributed to the block, row, column, and residual terms which altogether compose the error variance
  4. c h 2 =broad-sense heritability estimates obtained by fitting inbred lines as random terms in the statistical model across growing seasons
  5. d Traits values obtained from lyophilized flour
  6. e Breakdown values were squared-root transformed