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

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

From Science Daily ● May 21, 2024

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

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

Each ovule, which is reached by a pollen tube, swells up and becomes a seed.

From Mendelism Third Edition by Punnett, Reginald Crundall