被子植物

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

在被子植物花粉管中生殖细胞（应为雄核译者注）分裂成两个配子核。

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

克孜勒苏群孢粉组合以松杉目优势、真蕨目海金始被子植物出现为特征。

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.

然而在根中，它还是适用。在一些被子植物根中，还发现了第四种组织，即calpytrogen，与根冠发生有关。