pollen tube


noun Botany.

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

Origin of pollen tube

First recorded in 1825–35

Example sentences from the Web for pollen tube

British Dictionary definitions for pollen tube

pollen tube

noun

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

Scientific definitions for pollen tube

pollen tube

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.