histogen

常见例句

In roots, however, the concept is still applied, and in some angiosperm roots a fourth histogen zone is recognized, the calpytrogen, which gives rise to the root cap.
然而在根中，它还是适用的。在一些被子植物的根中，还发现了第四种组织原，即calpytrogen，与根冠发生有关。
histogen concept
组织原概念
histogen theory
组织原学说
See histogen theory;
参见histogentheory;