angiosperm

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（应雄原核译者注）裂成两个配子核。

Heteranthery exists in several angiosperm families, such as Melastomataceae, Solanaceae, Lythraceae, Leguminosae and Pontederiaceae, but the aspects and extent of differentiation often vary in taxa.

异型雄蕊在野、茄、干屈菜、豆、雨久花等多个中都有布,但其与程度常随类群而异。

Heteranthery exists in several angiosperm families, such as Melastomataceae, Solanaceae, Lytbraceae, Leguminosae and Pontederiaceae, but the aspects and extent of differentiation often vary in taxa.

异型雄蕊在野、茄、千屈菜、豆、雨久花等多个中都有布，但其与程度常随类群而异。

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原，即calpytrogen，与根冠发生有关。