Genetic Diversity and Geographical Differentiation of Desmodium triflorum (L.) DC. in South China Revealed by AFLP Markers

摘要: High levels of genetic variation enable species to adapt changing environments and provide plant breeders with the raw materials necessary for artificial selection. In present study, six AFLP primer pairs were used assess diversity Desmodium triflorum (L.) DC. from 12 populations in South China. A high percentage polymorphic loci (P = 76.16%) total gene (H T = 0.310) found, indicating that D. is at level. Genetic was also relatively population level (P = 55.85%, H e = 0.230). The coefficient differentiation among (G ST) 0.255, while most resided within populations, there considerable populations. AMOVA indicated 24.29% be partitioned (ΦST = 0.243). UPGMA clustering analysis based on distances showed could separated into three subgroups: an eastern, a western, central-southern subgroup. However, Mantel test revealed no significant correlation (r = 0.286, p = 0.983) between geographical separating these populations; mountain barriers flow human disturbance may have confounded correlations. study has provided some fundamental data will use exploitation triflorum.