pollen tube

American  

noun

Botany.

1. the protoplasmic tube that is extruded from a germinating pollen grain and grows toward the ovule.

---

pollen tube British  

noun

1. a hollow tubular outgrowth that develops from a pollen grain after pollination, grows down the style to the ovule, and conveys male gametes to the egg cell

---

pollen tube Scientific  

1. The slender tube that is formed after pollination by division of the tube cell in a pollen grain. The pollen tube penetrates the ovule and releases the male gametes.

---

Etymology

Origin of pollen tube

First recorded in 1825–35

Example Sentences

See Examples For:

pollen tube

One-to-one pollen tube guidance is a critical process in plant reproduction that involves precise navigation of pollen tubes to individual ovules.

From Science Daily ● May 21, 2024

The reverse genetic search showed the ETH researchers that the two genes control the growth of the pollen tube.

From Science Daily ● Apr. 16, 2024

"We're currently investigating other gene candidates that are also involved in pollen tube growth," Bomblies says.

From Science Daily ● Apr. 16, 2024

When the pollen lands on a female scale, a pollen tube grows toward the female gametophyte, which consists of an ovule containing the megaspore.

From Textbooks ● Jan. 1, 2015

By carefully opening the ovary and slightly crushing it in a drop of water, the pollen tube may sometimes be seen growing along the stalk of the ovule until it reaches and enters the micropyle.

From Elements of Structural and Systematic Botany For High Schools and Elementary College Courses by Douglas Houghton Campbell