为了探索霉梨(Pyrus spp.)品种群的起源,基于叶绿体片段(accD-psaI,trnL-F)及低拷贝核基因LEY2第二内含子(LFY2int2-N)DNA序列信息对相关的梨属植物进行了系统发育分析。结果表明:除了‘小霉梨’,其它样本均为同一种叶绿体单倍型,与大多数砂梨品种的单倍型一样;基于LFY2int2-N的系统发育树显示霉梨和浙江原产砂梨均非单系类群,但两者关系密切;霉梨并非种间杂种,豆梨很可能没有直接参与其起源。 In order to explore the origin of the Pyrus spp. Population, based on the DNA sequence information of the chloroplast fragment (accD-psaI, trnL-F) and the low copy nucleus gene LEY2int2-N, Plant phylogenetic analysis. The results showed that except for ’millet pear’, the other samples were the same chloroplast haplotype, which was the same as the haplotypes of most sand pear cultivars. The phylogenetic tree based on LFY2int2-N showed that millet pear and Zhejiang native pear Are not monosomic groups, but the relationship between the two closely; pear is not interspecific hybrids, pear probably not directly involved in its origin.