四种枣叶片的解剖学研究

Anatomical Study on four Varieties of Ziziphus jujuba Leaves

对主产在陕北的骏枣、苹果枣、梨枣和狗头枣四种枣的叶片解剖学研究表明,其四种枣的叶片叶肉组织均由栅栏组织状的细胞组成,属等面叶,趋向旱生结构的特征.四种枣树的叶片结构也存在一定的差异,骏枣叶片的主脉中有较多的乳汁管,而其余三种则不存乳汁管;此外,四种枣叶的叶脉维管束外具有类似维管束鞘的结构和散布少量分泌细胞.

The anatomical characteristics of four varieties of species Ziziphus jujuba leaves species, consisting of Z. jujuba var. junzao, Z. jujuba var. pingguozao, Z. jujuba var. lizao and Z. jujuba var. goutouzao, were observed. The results show leaves' structure pattern of four varieties of Z. jujuba belongs to isobilateral leaf, which was anatomically characterized by vascular bundle sheath around the vein in some leaves. Besides, some laticifers occur in the main vein of Z. jujuba var. junzao leaves.