让我们先看看植物体节（phytomer）的定义

1、During the vegetative phase of growth, the shoot apical meristem produces stem, leaves and axillary buds in units known as phytomers.

2、An organic element of a flowering plant; a phyton.

3、Phytomere is a shoot developmental unit that is repeated as a shoot grows, it consists of a node with one or more leaves attached, the internode below the node and one or more lateral buds. The unique aspects of plants, including sessile habit, modular growth and diverse developmental programs expressed at the phytomer level

4、A phytomer is the functional elementary unit of plant

5、the meristic organization of the plant body which is supposedly formed by repetitions of its morphological unit, the phytomer. According to the phytomer concept of SHARMAN (1942), each grass leaf and its associated internode with intercalary meristem activity form such a developmentally independent unit.

6、A plant can be considered as the accumulation of elements which consist of stem fragment attached with leaf and lateral bud piled up axially. Stem fragment attached with one leaf and one lateral bud is assumed, called phytomer.

7、Plant shoots are comprised of repeated structural segments called phytomers, each comprised of the leaf, stem, and lateral bud (Sharman, 1942; Galinat, 1959).

8、Any axe (main stem or tiller) is made of a repetition of a basic motif, the phytomer, comprising a leaf, and internode (a stem segment), a node (which connect the successive internodes to form the stem, and a bud (which may develop in a tiller). The rank of a phytomer denotes its position along an axe: the lower phytomer has rank one and the highest phytomer, bearing the flag leaf, has a rank equal to the total number of leaves formed on this axe. The different components of a phytomer (leaf, internode, etc) are given the same rank as the phytomer. In the text, the term “position” is used, with the same meaning as “rank”.

鉴于phyto-的意义为“A prefix meaning “plant.””；–mere or –mer的意义为“Part; segment: blastomere, polymer.” 因此，宜将“在营养生长阶段，茎端分生组织产生的茎、叶和腋芽单位”译为植物体节（phytomer），即植物地上部分的形态结构和发育单位。

有人将之译为“植物繁殖单位”，不确切，因为它可与动物发育模块相类比，个人认为译为“植物体节”要准确得多。

 

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