Maize
Domesticated grass staple, key to global food and industry.
Maize (Zea mays), also known as corn, is a tall stout grass that produces cereal grain. Since the Columbian exchange, maize has spread worldwide, with total production surpassing that of wheat and rice, and it is used for human consumption, animal feed, and industrial products such as ethanol.
- chromosome_count
- 20 (diploid)
- world_production_2020
- 1.1 billion tonnes
- key_pests
- European corn borer, corn rootworms
- model_organism_use
- Genetics and developmental biology
Lore & Background
Maize was domesticated from wild teosinte, likely Zea mays subsp. parviglumis, in the Balsas River valley of Mexico. The plant relies on humans for propagation and has a single tall stalk with separate male tassels and female ears that produce kernels. Modern varieties are usually yellow or white, but other colors include orange, red, brown, blue, purple, and black.
Reader's Guide
It is a staple food in many regions, used for tortillas, tamales, polenta, and hominy grits, and is also critical for animal feed and industrial products like corn starch, syrup, oil, and biofuels. Its protein is low in essential amino acids, and niacin requires alkali treatment for bioavailability. Maize has been a model organism for genetics, notably used by Barbara McClintock to validate transposon theory. Modern breeding and genetic modification have improved yield, nutrition, and pest tolerance, though it remains susceptible to drought and nutrient-deficient soils due to shallow roots.
Frequently Asked Questions
How does Maize's story arc resolve?
Maize has no single narrative endpoint; instead its arc continues as the world's most-produced cereal crop, with output still climbing year over year. Its legacy endures through every generation of growers and every downstream product—from tortillas to fuel—derived from its kernels.
Why is Maize so important to the ensemble cast?
Maize anchors the famous Three Sisters polyculture alongside beans and squashes, a planting strategy indigenous peoples developed to maximize soil health and yield in a single field. Since the Columbian exchange it has spread to every continent, underpinning global food security and biofuel production on an unprecedented scale.
What are Maize's known weaknesses or antagonists?
The European corn borer and corn rootworms are its most persistent natural threats, capable of devastating entire fields if populations go unchecked. Its tall, stout structure also leaves it vulnerable to wind damage during heavy storms, a recurring hazard for growers worldwide.
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