Fig. 6
From: Hybridization and introgression between Helicoverpa armigera and H. zea: an adaptational bridge
Climate and landscape effects on introgression estimates. Introgression ratios were calculated based on STRUCTURE analysis using K = 2. Dependent variables were estimated from the first PC axis of the 19 Bioclim variables (climate variables) and 14 land-use classes (landscape variables)