Passing to the difference six litchi specieses which are the very precocious and precocious or middle mature analyzed, the primers of OPJ - 15, OPK - 01, OPL - 15, OPO -05, OPU-03, OPT-04, S64, S66, OPAL03, OPAN07 are selected.

• 通过对极早熟(971、991、桂1-1、桂1-2)与早熟(三月红)或早中熟(妃子笑、糯米糍)有差异6个荔枝品种进行引物筛选,选出10个随机引物。