Table 3. Results of Phylogenetic Analyses Evaluating Evolution of Selected Plastome Traits in Orobanchaceae
Constant-Variance Random Walk (H0) versus Directional Random Walk Model (H1) of Trait EvolutionGradual (H0) versus Punctuated (H1) Trait EvolutionaCovariance (H0) versus No Covariance (H1) among Traitsa
Traits Tested-lnL H0b-lnL H1LRTP Value-lnL H1LRTP Value-lnL H1LRTP Value
 Parasitism and repeat density89.65483.13813.0320.00183.5770.8780.34987.9788.8020.003
 Relative genome reduction and repeat density140.136131.55717.158<0.001130.0163.0830.079131.9570.8000.371
 Parasitism and GC %28.56320.18516.756<0.00120.3040.2370.62620.3890.4060.524
 Parasitism and coding GC %25.28515.82518.920<0.00111.7298.1920.00415.9900.3310.565
 Parasitism and noncoding GC %32.07322.70818.729<0.00122.7860.1560.69223.1450.8740.350
 Loss of photosynthesis and GC %26.40819.69513.4260.00116.6756.0400.01420.0490.7080.400
 Loss of photosynthesis and coding GC %20.26013.01614.490<0.0019.4447.1440.00815.6515.2690.022
 Loss of photosynthesis and noncoding GC %30.14622.66314.966<0.00119.1177.0920.00822.8050.2840.594
  • a H0 is the best supported model from the test constant-variance random walk versus directional random walk model.

  • b lnL, log likelihood.