The diversity of nuclear ribosomal DNA(rDNA)internal transcribed spacer(ITS) sequences of Ginkgo biloba was determined by analyzing 10 leaf samples resenting different populations.

• 为研究银杏Ginkgo biloba种内核糖体DNA内转录间隔(ITS)区序列的多样性,以具有代表性的10个银杏嫩叶样本为材料,提取基因组DNA后用特异性引物进行PCR扩增,并直接测定其ITS区序列。