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The tube nucleus disintegrates as the pollen tube penetrates the nucellus. 另外的粉管核会在花粉管穿过珠心时发生分裂。
pollen tube nucleus 花粉管核
The vegetative nucleus in a pollen grain moves into the pollen tube before the formation of two sperms and degenerates subsequently . [方法]应用常规石蜡切片和荧光显微技术，对水稻受精过程及其经历时间进行研究。
A serologic reaction retards the growth of the pollen tube. 血清反应阻止花粉管生长。
The results are as follows: Pollen grains germinate soon after pollination. 2 sperms enter pollen tube, leaving vegetative nucleus，which degenerates in pollen soon. 结果表明，授粉后，花粉随即萌发，2个精子进入花粉管，营养核留在花粉粒内，不久解体。
Pollen tube entered and destroyed one synergid and released successive round staff between egg and central cells.One sperm nucleus entered egg and the other entered central cell. 两个精核分别进入卵细胞和中央细胞分别与卵核和极核融合。
Another case is that pollen tube of self-pollen grows Slowly. 花粉管生长慢。
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。
After the pollen grain germinates on the surface of the stigma, the vegetative nucleus migrates to the tip of the pollen tube.It is thought to regulate the growth and development of the pollen tube. 花粉粒在柱头表面发育后，其内的营养核向花粉管顶部移动，因此认为营养核具有调节生长和花粉管发育的作用。
Pollen tube is defined as the tube through which pollen passes into the ovary. 花粉管定义为花粉进入子房的管道。
Generative cell One of the haploid cells in the POLLEN TUBE of seed platns. 生殖细胞：是位于种子植物花粉管中的一个单倍体细胞。
The coated vesicles in the growing pollen tube are secreted from golgi body. 生长中的花粉管的被膜小泡可由高尔基体分泌形成。
A minute opening in the ovule of a seed plant through which the pollen tube usually enters. 珠孔种子植物胚珠上的小开口，通常花粉管由此进入胚珠
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。
Cortical microtubules and spiny vesicles appear in the cytoplasm after germination of the pollen tube. 花粉萌发后，细胞质中出现周质微管和被刺小泡，此期细胞器的变化不明显。
Studies on Pollinating Habit and Pollen Tube Growth Course of Lagerstroemia indica L. 紫薇受粉习性及花粉管生长的研究。
THE EFFECT OF CYCLOHEXIMroE AND ACTINOMYCIN D ON POLLEN GERMINATION AND POLLEN TUBE GROWTH OF PINUS BUNGEANA AUCC. 放线菌酮和放线菌素D对白皮松花粉萌发和花粉管生长的调控作用
Pollen tube entered one synergid, and released two sperms between egg and central cells. 精子脱掉细胞质鞘后，形成精核与细胞质体；
And the breakage of RER is another resource of coated vesicles in the growing pollen tube. 另外还观察到内质网的碎裂也是荞麦花粉管中产生被膜小泡的一种机制。
Pollen of Torenia fournieri is two-celled and the division of generative cell occurs in the pollen tube. 摘要蓝猪耳是二细胞型花粉，生殖细胞在花粉管中分裂形成两个精细胞。