Fig. 6From: Hybridization and introgression between Helicoverpa armigera and H. zea: an adaptational bridgeClimate 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)Back to article page