TABLE 4

Contributions of historical sources for each model-based inbred group

GroupTropical Lowland (mean ± SE)Southern Dent (mean ± SE)Tropical Highland (mean ± SE)Northern Flint (mean ± SE)
NSS0.31 ± 0.010.37 ± 0.010.05 ± 0.010.27 ± 0.01
Popcorn0.26 ± 0.030.23 ± 0.020.11 ± 0.030.40 ± 0.03
SS0.32 ± 0.010.38 ± 0.010.08 ± 0.010.23 ± 0.01
Sweet0.14 ± 0.020.06 ± 0.020.08 ± 0.020.72 ± 0.03
TS0.66 ± 0.010.11 ± 0.010.18 ± 0.010.04 ± 0.01

The estimates and their standard errors of the historical sources are summarized for each group. These are maximum-likelihood estimates (MLEs). Variance was estimated from the observed Hessian matrix. Because of the MLE's asymptotic normality, the 95% confidence interval can be constructed approximately from the mean ± 1.96 × SE.