How poppy flowers get those vibrant colours that entice insects

With bright reds and yellows—and even the occasional white—poppies are very bright and colorful. Their petals, however, are also very thin; they are made up of just three layers of cells. University of Groningen scientists ...

VIDEO: 5,000 robots merge to map the universe in 3-D

How do you create the largest 3-D map of the universe? It's as easy as teaching 5,000 robots how to "dance." DESI, the Dark Energy Spectroscopic Instrument, is an experiment that will target millions of distant galaxies by ...

Guns and roses: Afghan farmers enjoy sweet smell of success

Standing in a field of roses in eastern Afghanistan, former poppy grower Mohammad Din Sapai quickly but carefully plucks the delicate petals that will be turned into rose water and oils for sale around the world.

Researchers unlock thorny secrets of rose DNA

A new, detailed breakdown of the modern rose genome should help growers improve traits such as pest and drought resistance, and boost the vase life of cut stems, researchers said Monday.

Using E-petals for making stretchable metal conductors

The research beat goes on in stretchable electronics. Scientists work on solutions for ultraflexible, stretchable, and wearable electronics and pursue advanced materials toward that end. Dr. Peter Harrop, chairman of market ...

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Petal

Petals are modified leaves that surround the reproductive parts of flowers. They often are brightly colored or unusually shaped to attract pollinators. Together, all of the petals of a flower are called a corolla. Petals are usually accompanied by another set of special leaves called sepals lying just beneath the corolla. When the petals and sepals of a flower look similar they are called tepals. Examples of plants in which the term tepal is appropriate include genera such as Aloe and Tulipa. Conversely, genera such as Rosa and Phaseolus have well-distinguished sepals and petals.

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