摘要： 通过对冀芝1号、辽芝1号“双茎”及对照栽培芝麻幼苗期植株构造解剖观察,发现其顶端分生组织是以外生源方式首先分化出叶原基,接着分化出腋芽原基,最后形成具有输导组织系统的腋芽潜伏在叶腋之中,“双茎”栽培解放了这对腋芽,使之发育成“双茎”。并于盛花期的构造解剖发现,辽芝1号“双茎”分杈处下方的茎髓中出现异常分生组织和该异常分生组织业已分化出的异常维管束,显示出植物结构、形态及功能的一致性。

Abstract: In this paper, the studies on the anatomical structures of 2 sesame cultivars "ji-1 sesame"and "Liao-1 sesame"respectively under 2 cultivative way?double-stem"and "single-stem"were made in the seedling stage,and the flourish flowering stage in Shenyang in 1997. The results showed that the apical meristem of the seedlings first differentiated 2 leaf primordium and then 2 axillary bud primordium which finally become the 2 axillary buds which were 2 latent buds with vascular bundles in the 2 leaf axils. The results of the study also showed that the "double-stem" cultivation liberated the 2 axillary buds and made them become a " double-stem". The anatomical structure of "Liao-1 sesame"under"double-stem"cultivation way in flourish flowering stage showed that in the stem blow the part where a "double-stem" was formed and the double stems had branched each other there were 4-5 abnormal nascent tissues which became 4-5 ab-normal vascular bundles after. These abnormal vascular bundles can stregthen the abilities of the supporting and transporting to some extent. But the anatomical structure of "Liao-1 sesame"under "single-stem"cultivation way proved that there were no abnormal nascent tissue and abnormal vas-cular bundle in the stem. The appearance of both abnormal nascent and abnormal vascular bundles reflected the unity of the inner structure,outer morphological character and the functional charac-teristics in plants.

Key words: Sesame, Double-stem, Anatomical structure, Cultivation way

中图分类号: 

• S565.3