UPGMA clustering system, principal component analysis (PCoA) and the genetic structure analysis showed, Pterospermum Fujian sample can be divided into groups based Hunan Ⅰ and Ⅱ Ganghwa sample based groups, and may be further divided into seven subgroups group, which groups may be respectively ⅰ and group ⅱ subdivided into four subgroups and 3.
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