Indian corn
Q: Why are some corn kernels colored?
And why those particular colors? Jeannine, Albuquerque, New Mexico
 Indian corn. Photo courtesy of CIMMYT, copyright, used with
permission.
A: Why are heads on top of necks? Why
are hearts connected to blood vessels? Why
are kernels colored? The answer is the
same: genes. Genes govern everything from the tiniest molecular interaction within a cell to the
shape of the whole body and also the color of corn.
Corn kernels have different colors because of genes that control color. Each kernel is an
individual with its own set of genes, like an embryo. Kernels are siblings housed on the same ear
and so naturally have many different colors. By naturally, I mean, through the course of natural
selection. One-color ears are unnatural products of human selection.
Livestock feeders prefer vitamin-rich yellow kernels, Southerners like white kernels, and Native
Americans favor blue. Years of deliberate selection, careful pollination, and storing of seeds
produced these single-color corn ears.
Saying an ear naturally has many colors does not completely answer your question: why
these
colors? On a deeper level: what does color do for corn?
In general, colors help a plant attract or repel other organisms or hide from predators. Colors
also occur as an integral part of biochemical reactions. For example, the chlorophyll in green
leaves reflects green light as it absorbs red and blue light from the Sun during photosynthesis.
Some studies suggest corn pigments promote resistance to insects or fungi that invade an ear of
corn.
By the way, corn has been around a long time. Primitive peoples of Central America or Mexico
were the horticultural geniuses who first cultivated corn at least 5,600 years ago.
Further Surfing:
Is Indian corn poisonous?
Sale of Indian Corn in 1846
Are you interested in the Native American culture such as
native american
clothing? If you are interested in learning about
indian art,
sign online today. No matter what kind of
Indian
crafts you are interested in making, the internet can show you the
history and origin of them. If you are interested in learning about native
american jewelry, you can find the info online!
(Answered June 1999, updated Aug. 1, 2007) |
