A report on Maize

Plant fragments dated to 4200 BC found in the Guilá Naquitz Cave in Oaxaca, Mexico, showed maize had already been domesticated from teosinte.
Cultivation of maize in an illustration from the 16th c. Florentine Codex
Ancient Mesoamerican relief, National Museum of Anthropology of Mexico
Many small male flowers make up the male inflorescence, called the tassel.
Zea mays 'Ottofile giallo Tortonese` – MHNT
Zea mays "strawberry"—MHNT
Zea mays "Oaxacan Green" MHNT
Variegated maize ears
Multicolored corn kernels (CSIRO)
Exotic varieties of maize are collected to add genetic diversity when selectively breeding new domestic strains
Teosinte (top), maize-teosinte hybrid (middle), maize (bottom)
Stucco head of the Maya maize god, 550–850 AD
Seedlings three weeks after sowing
Young stalks
Mature plants showing ears
Mature maize ears
Harvesting maize, Jones County, Iowa
Harvesting maize, Rantasalmi, South Savonia, Finland
Hand-picking harvest of maize in Myanmar
Production of maize (2019)
Semi-peeled corn on the cob
Poster showing a woman serving muffins, pancakes, and grits, with canisters on the table labeled corn meal, grits, and hominy, US Food Administration, 1918
Mexican tamales made with corn meal
Boiled corn on a white plate
Farm-based maize silage digester located near Neumünster in Germany, 2007. Green inflatable biogas holder is shown on top of the digester.
Children playing in a maize kernel box
Female inflorescence, with young silk
Mature silk
Stalks, ears and silk
Male flowers
Full-grown maize plants
Mature maize ear on a stalk
Maize kernels
Maize plant diagram
Ear of maize with irregular rows of kernels
With white and yellow kernels

Maize (Zea mays subsp.

- Maize

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Examples of sources of gluten (clockwise from top): wheat as flour, spelt, barley, and rye as rolled flakes

Gluten

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Structural protein naturally found in certain cereal grains.

Structural protein naturally found in certain cereal grains.

Examples of sources of gluten (clockwise from top): wheat as flour, spelt, barley, and rye as rolled flakes
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Wheat, a prime source of gluten
Gluten is often used in imitation meats (such as this mock duck) to provide supplemental protein and in vegetarian diets
Medical animation still showing flattened intestinal villi.

The storage proteins in other grains, such as maize (zeins) and rice (rice protein), are sometimes called gluten, but they do not cause harmful effects in people with celiac disease.

An assortment of different caryopses

Caryopsis

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Type of simple dry fruit—one that is monocarpellate (formed from a single carpel) and indehiscent (not opening at maturity) and resembles an achene, except that in a caryopsis the pericarp is fused with the thin seed coat.

Type of simple dry fruit—one that is monocarpellate (formed from a single carpel) and indehiscent (not opening at maturity) and resembles an achene, except that in a caryopsis the pericarp is fused with the thin seed coat.

An assortment of different caryopses
Wheat spikelet with the three anthers sticking out
Caryopsis cross-section

The caryopsis is popularly called a grain and is the fruit typical of the family Poaceae (or Gramineae), which includes wheat, rice, and corn.

Current distribution of the indigenous peoples of the Americas (not including mixed people like mestizos, métis, zambos and pardos)

Indigenous peoples of the Americas

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The Indigenous peoples of the Americas are the inhabitants of the Americas before the arrival of the European settlers in the 15th century, and the ethnic groups who now identify themselves with those peoples.

The Indigenous peoples of the Americas are the inhabitants of the Americas before the arrival of the European settlers in the 15th century, and the ethnic groups who now identify themselves with those peoples.

Current distribution of the indigenous peoples of the Americas (not including mixed people like mestizos, métis, zambos and pardos)
Diné boy, in the desert of Monument Valley, AZ, United States of America. The Three Sisters buttes are visible in the background.
Mapuche man, in Chile
Mayan women in Antigua Guatemala, Central America.
Language families of Indigenous peoples in North America: shown across present-day Canada, Greenland, the United States, and northern Mexico
The Kogi, descendants of the Tairona, are a culturally-intact, largely pre-Columbian society. The Tairona were one of the few indigenous American civilizations that were not fully conquered.
"The Maiden", one of the discovered Llullaillaco mummies. A Preserved Inca human sacrifice from around the year 1500.
Cultural areas of North America at time of European contact
Eight Crow Nation prisoners under guard at Crow agency, Montana, 1887
Drawing accompanying text in Book XII of the 16th-century Florentine Codex (compiled 1540–1585), showing Nahuas of conquest-era central Mexico suffering from smallpox
Indigenous people at a Brazilian farm plantation in Minas Gerais ca. 1824
A bison hunt depicted by George Catlin
Ancient mesoamerican engraving of maize, National Museum of Anthropology, Mexico
Main indigenous language families of South America (except Quechua, Aymaran, and Mapuche).
Maya glyphs in stucco at the Museo de sitio in Palenque, Mexico
Textile art by Julia Pingushat (Inuk, Arviat, Nunavut, Canada), wool, embroidery floss, 1995
Chimu culture feather pectoral, feathers, reed, copper, silver, hide, cordage, ca. 1350–1450 CE
Indigenous man playing a panpipe, antara or siku
Indigenous protesters from Vale do Javari, one of the largest indigenous territories in Brazil
A map of uncontacted peoples, around the start of the 21st century
Bill Reid's sculpture The Raven and the First Men (collection of the Museum of Anthropology, University of British Columbia, Vancouver). The Raven represents the Trickster figure common to many mythologies.
Some Inuit people on a traditional qamutiik (dog sled) in Cape Dorset, Nunavut, Canada
Tunumiit Inuit couple from Kulusuk, Greenland
Wixarika (Huichol) woman from Zacatecas
Tenejapa Carnival with Tzeltal people, Chiapas
Rarámuri marathon in Urique.
Choctaw artist from Oklahoma
A Navajo man on horseback in Monument Valley, Arizona
Indigenous Salvadoran Pipil women dancing in the traditional Procession of Palms, Panchimalco in El Salvador
Maya women from Guatemala
A Mayan woman
Owners of a roadside cafe near Cachi, Argentina
Indigenous woman in traditional dress, near Cochabamba, Bolivia
Indigenous man of Terena tribe from Brazil
Mapuche man and woman. The Mapuche make up about 85% of Indigenous population that live in Chile.
Guambía people relaxing in Colombia
Shaman of the Cofán people from the Ecuadorian Amazon Ecuador Amazonian forest
Quechua woman and child in the Sacred Valley, Cuzco Region, Peru
A Warao family from Venezuela traveling in their canoe
Evo Morales (Aymara), former President of Bolivia
Schematic illustration of maternal (mtDNA) gene-flow in and out of Beringia, from 25,000 years ago to present
Wayúu artisan women, in the Colombian-Venezuelan Guajira.
Quechua women in festive dress, on the island of Taquile (Lake Titicaca).

The domestication of maize or corn required thousands of years of selective breeding, and continued cultivation of multiple varieties was done with planning and selection, generally by women.

A bowl of oatmeal porridge

Porridge

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Food made by heating or boiling ground, crushed or chopped starchy plants, typically grain, in milk or water.

Food made by heating or boiling ground, crushed or chopped starchy plants, typically grain, in milk or water.

A bowl of oatmeal porridge
A bowl of oatmeal porridge
Cooked oatmeal in a bowl
Porridge as sold in German supermarkets
Millet porridge
Porridge oats before cooking
Porridge by William Hemsley (1893)
Champorado
Rice porridge with mixed fruit soup
Beef yam porridge with red and green pepper
Malt-O-Meal with coffee
Traditional Estonian rustic porridge Mulgipuder made with potatoes, groats and meat is known as a national dish of Estonia
Traditional Latvian barley grit porridge with milk, potatoes and speck (bukstiņputra)

Maize porridge:

Silage underneath plastic sheeting is held down by scrap tires. Concrete beneath the silage prevents fermented juice from leaching out

Silage

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Type of fodder made from green foliage crops which have been preserved by fermentation to the point of acidification.

Type of fodder made from green foliage crops which have been preserved by fermentation to the point of acidification.

Silage underneath plastic sheeting is held down by scrap tires. Concrete beneath the silage prevents fermented juice from leaching out
Cattle eating silage
MB Trac rolling a silage heap or "clamp" in Victoria, Australia
Haylage bales in Tyrol
Top view of Silage Fermentation
Anaerobic digester

Silage is usually made from grass crops, including maize, sorghum or other cereals, using the entire green plant (not just the grain).

Corn is the main feedstock used for producing ethanol fuel in the United States.

Corn ethanol

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Corn is the main feedstock used for producing ethanol fuel in the United States.
An ethanol fuel plant in West Burlington, Iowa.
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Corn ethanol is ethanol produced from corn biomass and is the main source of ethanol fuel in the United States, mandated to be blended with gasoline in the Renewable Fuel Standard.

USP grade ethanol for laboratory use.

Ethanol

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Organic chemical compound.

Organic chemical compound.

USP grade ethanol for laboratory use.
Ethanol burning with its spectrum depicted
Hydrogen bonding in solid ethanol at −186 °C
94% denatured ethanol sold in a bottle for household use
Infrared reflection spectra of liquid ethanol, showing the −OH band centered near 3300 cm−1 and C−H bands near 2950 cm−1
Near-infrared spectrum of liquid ethanol

In the United States, the ethanol fuel industry is based largely on corn (also known as maize).

Inca Empire

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The largest empire in pre-Columbian America.

The largest empire in pre-Columbian America.

The Inca Empire at its greatest extent c. 1525
Manco Cápac and Mama Ocllo, children of the Inti
Manco Cápac, First Inca, 1 of 14 Portraits of Inca Kings, Probably mid-18th century. Oil on canvas. Brooklyn Museum
Inca expansion (1438–1533)
The first image of the Inca in Europe, Pedro Cieza de León, Crónica del Perú, 1553
Atahualpa, the last Sapa Inca of the empire, was executed by the Spanish on 29 August 1533
View of Machu Picchu
Sacsayhuamán, the Inca stronghold of Cusco
"The Maiden", one of the Llullaillaco mummies. Inca human sacrifice, Salta province (Argentina).
Diorite Inca sculpture from Amarucancha
Illustration of Inca farmers using a chakitaqlla (Andean foot plough)
Inti, as represented by José Bernardo de Tagle of Peru
The four suyus or quarters of the empire.
Inca tunic
Tokapu. Textiles worn by the Inca elite consisting of geometric figures enclosed by rectangles or squares. There is evidence that the designs were an ideographic language
Quipu, 15th century. Brooklyn Museum
Inca Tunic, 15th-16th Century
Camelid Conopa, 1470–1532, Brooklyn Museum, Small stone figurines, or conopas, of llamas and alpacas were the most common ritual effigies used in the highlands of Peru and Bolivia. These devotional objects were often buried in the animals' corrals to bring protection and prosperity to their owners and fertility to the herds. The cylindrical cavities in their backs were filled with offerings to the gods in the form of a mixture including animal fat, coca leaves, maize kernels and seashells.
Coca leaves
The Battle of the Maule between the Incas (right) and the Mapuches (left)

Such a link between the Inca state and chuño may be questioned, as other crops such as maize can also be dried with only sunlight.

Field corn

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Field corn, also known as cow corn, is a North American term for maize (Zea mays) grown for livestock fodder (silage), ethanol, cereal, and processed food products.

Cucurbita

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Genus of herbaceous vegetables in the gourd family, Cucurbitaceae (also known as cucurbits or cucurbi) native to the Andes and Mesoamerica.

Genus of herbaceous vegetables in the gourd family, Cucurbitaceae (also known as cucurbits or cucurbi) native to the Andes and Mesoamerica.

C. pepo pumpkins – the two bright orange ones in center right, and squashes C. maxima, all others
The leaves of Cucurbita moschata often have white spots near the veins.
A variety of fruits displayed at the Real Jardín Botánico de Madrid in 2016
An assortment of fruits of C. maxima and C. pepo
Cucurbita female flower with pollinating squash bees
Male flower, part of the perianth and one filament removed
Kabocha seedling seven days after being sown
A festival-winning pumpkin in 2009 weighing 742 kg
C. moschata 'Butternut'
Fruit of the 'Tromboncino' cultivar of the Crookneck (C. moschata) Group are eaten either when very young, or as mature winter squash.
Cucurbita pepo subsp. texana, from Les Grandes Heures d'Anne de Bretagne, 1503–1508, f. 161, earliest depiction of cucurbits in Europe
Pumpkin custard made from kabocha, a cultivated variant of C. maxima
Moche squash ceramic. 300 C.E. Larco Museum
A pyramid of squashes in the Waterlily House, Kew Gardens, 2013

The earliest known evidence of the domestication of Cucurbita dates back at least 8,000 years ago, predating the domestication of other crops such as maize and beans in the region by about 4,000 years.