英 [ˈreɪkɪs] 美 [ˈreɪkɪs]
n. 脊柱；花轴，[植] 叶轴
复数rachides或rachises
rachis //
名词 the main axis or stem of an inflorescence or compound leaf 花(序)轴; 叶轴
axis of a compound leaf or compound inflorescence
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
同义词： spinal column / vertebral column / spine / backbone / back
穗轴-引用次数：8
Wax slicing technique and micro-structure determination methods were adopted to study the vascular bundle structure in flag leaves,sheath,internodes,the 1st node below the ear,rachis of hybrid wheat 901,the father and mother plant,and Shan229.
用常规石蜡切片法和显微观测技术，对开花后28天的901、恢复系、不育系和陕229四个小麦品系的旗叶、叶鞘、节、节间、穗轴和籽粒腹沟区维管束进行显微观测。
叶轴-引用次数：3
Via the study for the regeneration of the folioles and rachis of the compound leaf, rachis is selected for the genetic transformation.
通过对刺槐复叶中小叶和叶轴两部分的再生试验，确定刺槐的叶轴作为本试验进行遗传转化的受体材料。
花序轴-引用次数：2
Rachis was the most fitting explant to induce the bulblets in vitro directly. The MS medium with 10mg/LBA, 5mg/LNAA and 30g/L sucrose was founded to be optimum for induction bulblets from rachis, the effective induction rate reached 171.3%.
3.适合花序轴诱导试管球的最佳培养基为MS+BA10mg/L+NAA5mg/L+蔗糖30g/L,有效诱导率达到171.3%。
叶轴-引用次数：3
参考来源百脉根复叶发育分子机制的初步研究
花轴-引用次数：1
参考来源草苁蓉的生物学研究
主轴;脊柱
脊
脊柱;花序轴
叶轴;羽轴;中央索;端轴
分脊
叶轴
... 后囟 posterior 脊柱 Rachis 长骨 Long Bone ...
... column 栏 rachis 脊椎 keystone 拱顶石 ...
rachischisis 先天性椎弓不连；脊柱裂
脊柱；[植]花轴，叶轴
That is interesting because the rachis seems to aid in flight.
这就很有趣了，因为羽轴似乎有助于飞行。
Branchlets and inflorescence rachis sparsely pubescent or puberulent.
小枝和花序轴疏生短柔毛或者被微柔毛。
The finding suggests that the barbs and barbules evolved before the rachis in feathers.
该发现表明，羽毛中的羽枝和小羽枝是先于羽轴进化出来的。