tube nucleus meaning in Chinese
粉管核
管核见于植物
Examples
- The two sperm nuclei and the tube nucleus are all derived from a single microspore nucleus by mitosis .
两个精核和管核都是从同一个小孢子核有丝分裂产生的。 - Cupressus ) the pollen grains contain just two nuclei : a generative nucleus and a vegetative nucleus ( tube nucleus )
当花粉粒形成后，花粉粒壁上分布有萌发孔，花粉管从萌发孔处向外突起形成管状结构，生殖核转入管中。