The main results are as follows:The genomic DNA of mature leaves was successfully extracted by improved CTAB method in the pomegranate. A stable and duplicable system of RAPD-PCR was established and optimized.

• 用改良CTAB法成功的提取出了石榴成熟叶片的基因组DNA，并建立和优化了适合石榴的RAPD-PCR反应体系。