Pollen tube contents (PTC) are the liquid part of the pollen tube, shown in yellow. b) Upon pollination to the pistil, the pollen tube grows from pollen towards the ovule. Once the pollen tube ...

There’s no need to call the fire department. This fiery column is merely the top of a flower’s pistil. The orange structures you see within the blue outline are called xylem. There’s no need to call ...

Understanding exactly how a plant selects one of the hundreds of grains of pollen that land on a pistil can help breeders propagate better apples or peaches—or any other crop that reproduces by ...