Table 3 Likelihood-ratio tests of linear mixed effects models designed to detect the effects of the breeding design, the number of paternal or maternal genotypes analyzed, and their interaction on estimates of: (a) narrow sense heritability (h2), (b) maternal genetic variance (m2), and (c) environmental variance (e2).

From: Heritability and variance components of seed size in wild species: influences of breeding design and the number of genotypes tested

(a) h2

(b) m2

(c) e2

Fixed effects

 

df

χ2

P

 

df

χ2

P

 

df

χ2

P

Breeding design

1

3.88

0.049

Breeding design

3

6.28

0.099

Breeding design

2

2.63

0.27

Number of paternal genotypes

1

0.44

0.51

Number of maternal genotypes

1

0.08

0.77

Number of maternal genotypes

1

1.33

0.25

Breeding design × Number of paternal genotypes

1

4.41

0.034

Breeding design × Number of maternal genotypes

1

2.52

0.47

Breeding design × Number of maternal genotypes

2

6.1

0.047

  1. In these models, either publication identity associated with parameter estimates were included as a random effect. Df refers to degrees of freedom, χ2 refers to chi-squared statistic, P refers to the p-value of the hypothesis that the predictor does not explain additional variance relative to a model excluding it.
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