MtDNA Markers Selection
Based on the selection of mtDNA markers developed by Jaramillo-Correa (Jaramillo-Correa and Bousquet, 2003; Jaramillo-Correa et al., 2004), two mtDNA markers (matR and nad5-1) were obtained according to the criteria of high polymorphism, strong stability, and good repeatability (Supplementary Table S2 ).