Principal coordinate plots of 55 tea germplasm in Taiwan using 39 STS and CAPS loci based on modified Roger’s distance coefficient. The cultivar codes are the same as Table 1. A and AS: the assamica type; S and SA: the sinensis type ; F and FY: the Taiwanese wild species. The components of the first dimension explaining 24.5% genetic diversity separated C. formosensis from the rest groups, and the components of the second dimension explaining 15.9% genetic diversity isolated C. sinensis var. assamica and C. sinensis var. assamica x var. sinensis hybrid from the other groups.