采用磷酸铅沉淀的细胞化学方法 ,电镜下观察两个抗冷力显著不同的茉莉品种幼苗ATP酶活性在细胞中超微结构定位及其经冷胁迫的变化。结果表明 ,抗寒力强的双瓣茉莉品种比抗寒力弱的单瓣品种在低温胁迫下超微结构和ATP酶活性有更强的适应能力。茉莉幼苗叶肉组织ATP酶主要定位于细胞质膜、液泡膜、叶绿体片层、线粒体脊和胞间连丝等部位 ,小叶脉维管束的ATP酶主要分布在筛管和伴胞 Cytochemical methods of lead phosphate precipitation were used to observe the ultrastructural localization of ATPase activity in the seedlings of two jasmine cultivars with different cold tolerance and their changes under cold stress. The results showed that the cold-resistant double-clover jasmine varieties had stronger adaptability to ultrastructure and ATPase activity under cold stress than single cold-hardiness single-loam varieties. The ATPase of mesophyll tissue of jasmine seedlings mainly located in the cytoplasmic membrane, vacuolar membrane, chloroplast lamella, mitochondrial ridges and intercellular silk fibroin and other parts of ATPase mainly distributed in the sieve tube and the accessory cell