pollen tube

American  

noun

Botany.

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

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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

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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.

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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

This is the signal that enables the precise management of one-to-one pollen tube guidance.

From Science Daily ● May 21, 2024

The reason is that the pollen tube in these plants grows incorrectly, which keeps fertilization from taking place.

From Science Daily ● Apr. 16, 2024

Pollination is defined as the initiation of pollen tube growth.

From Textbooks ● Jan. 1, 2015

Finally the pollen tube penetrates down to and through the open neck of the archegonium, until it comes in contact with the egg cell.

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