Principal component analysis of four ecological factors, and their association with symptom, begomovirus and CMV prevalence in chiltepin populations with different levels of human management in Mexico.

Populations: All (n = 24); Wild (n = 9); Let Standing (n = 6); Cultivated (n = 9).
Bold indicates significant association based on broken-stick model thresholds.
*Significant linear correlation between a PC and prevalence variables (P<0.05).