被子植物

Generative nuclei The two gametic nuclei formed by the division of the generative cell in the pollen tube of angiosperms.

被子植物花管中的生殖细胞（应为雄原核译者注）分裂成两个配子的核。

The Kizilsu palynofloras are characterized by the dominance of coniferae, abundance of schizaeaceous ferns and presence of primitive angiospermous pollen.

克孜勒苏群孢以松杉目的优势、真蕨目海金沙科的赫和原始被子植物的出现为特征。

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.

然中，它还是适用的。一些被子植物的中，还发现了第四种织原，即calpytrogen，与冠发生有关。