Corn is called corn or corn in English. We all know that corn is more American's name, and the more common English name of corn comes from Spanish mahiz, which comes from Taino people who live in the Caribbean islands in Central America. /kloc-Spanish colonists who arrived in the Caribbean islands at the end of 0/5 continued to use the name of corn used by indigenous Taino people at that time.
However, the earliest corn did not originate in the Caribbean, but in the south of Mexico, that is, Central America.
Genetic archaeological research tells us that corn comes from an annual weed called Zea Mayssp (parviglumis) (from its Latin name, it belongs to the same species as corn, but it belongs to different subspecies). Chinese is sometimes translated into corn, which was first domesticated in the Balsas River basin in southern Mexico, about 9000 years ago.
In 1980s, some scholars confirmed that parviglumis's corn-like subspecies (also translated as common wild rice subspecies) had almost the same isozyme as modern corn, and this weed was the only subspecies with sufficient similarity to all modern corn genes.
Through the double confirmation of isozyme and gene similarity closely related to plant genetic variation, this kind of corn successfully defeated other competitors and almost became the only primitive ancestor of corn.
On the origin time, according to the periodic law of gene mutation, scholars' research shows that the earliest domestication of maize can be stuck from 5689 to 13093. If you take a middle point, the time is about 9000 years ago. most
6230 years ago, the early corn remains were found in the Naquez Cave in kina, Oaxaca Valley. According to the prediction of genetic archaeologists, it will take about 3000 years to domesticate the completely wild grass into cultivated corn. We can also speculate that the initial time of corn domestication was about 9000 years ago.
With regard to the origin of maize, the current three research methods have all given their own understandings and contributions: genetic archaeology has hit the nail on the head and irrefutably pointed out the origin time, place and ancestors, but left a lot of gaps that need to be filled by plant archaeological data.
The remains of large plants are credible, vivid and informative, but the time of origin is obviously different from the so-called genetic speculation time. Micro-plant remains appeared in the key time and area of maize origin, which seems to perfectly explain the difference between the results of the first two research methods, but it is controversial because of its own dating and archaeological background.