Pyrus spp. existed in China and7morphological characters of their pollen were used as material and clustered by the way of numerical taxonomy.

• 根据植物花粉性状的稳定性和遗传保守性,在对中国梨属植物13个种的花粉形态观察研究的基础上,采用数量化的分析方法,对花粉形态7个性状进行了聚类分析。