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

Further analysis showed the complexity of the one-to-one pollen tube guidance process, revealing anintricate regulatory mechanism that requires the involvement of various cells in both male and female plants.

From Science Daily ● May 21, 2024

In a recent study, published in Science, the researchers show that the pollen tube does not grow properly in newly formed polyploid plants.

From Science Daily ● Apr. 16, 2024

This means that the male gametes, which are located at the tip of the pollen tube, cannot fuse with the plant's egg cells.

From Science Daily ● Apr. 16, 2024

Pollination is defined as the initiation of pollen tube growth.

From Textbooks ● Jan. 1, 2015

Fʺ, pollen spores germinating upon the stigma, × 300. pt. pollen tube.

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