Scientists take major step in understanding domestication of corn ...
2022年2月2日 · Iowa State University scientists have harnessed gene editing to peer back through thousands of years of domestication to learn about teosinte, the wild ancestor of modern corn. The research allows for genetic comparisons and could lead to more resilient crops.
Teosinte - Native-Seeds-Search
Teosinte is an extremely important crop, as it believed that the subspecies parviglumis is the wild progenitor of corn. About 9,000 years ago, teosinte grew wild, as a grass-like plant, with a grain in a tough shell that was dispersed only when ripe.
Evolution of Corn - University of Utah
Through the study of genetics, we know today that corn's wild ancestor is a grass called teosinte. Teosinte doesn't look much like maize, especially when you compare its kernals to those of corn. But at the DNA level, the two are surprisingly alike. They have the same number of chromosomes and a remarkably similar arrangement of genes.
To Decode the Mystery of Corn, Smithsonian Scientists Recreate Earth as ...
2014年2月11日 · Corn's wild ancestor, teosinte, is shown growing under modern (chamber on the left) and under past (chamber on the right) climate conditions. Smithsonian scientists Dolores Piperno (right) with...
Scientists Trace Corn Ancestry from Ancient Grass to Modern Crop
2005年5月27日 · Researchers have identified corn genes that were preferentially selected by Native Americans during the course of the plant's domestication from its grassy relative, teosinte, (pronounced "tA-O-'sin-tE") to the single-stalked, large-eared plant we know today.
Tracking the Ancestry of Corn Back 9,000 Years
2010年5月24日 · Looking at the skinny ears of teosinte, with just a dozen kernels wrapped inside a stone-hard casing, it is hard to see how they could be the forerunners of corn cobs with their many rows of...
Ancient DNA Continues To Rewrite Corn’s 9,000-Year Society …
2020年12月14日 · Ancient peoples in southwestern Mexico encountered a wild grass called teosinte that offered ears smaller than a pinky finger with just a handful of stony kernels. But by stroke of genius or necessity, these Indigenous cultivators saw potential in the grain, adding it to their diets and putting it on a path to
ScienceShot: What Did Corn's Ancestor Really Look Like?
2014年2月4日 · The answer is that ancient teosinte grew differently from its modern counterpart, according to a study published in Quaternary International. Researchers made the discovery by growing today's teosinte in 20.1°C to 22.5°C greenhouses with 40% to 50% less carbon dioxide in the air—conditions more like those 14,000 years ago, before the plant ...
Corn and its untamed cousins: wild genes in domestic crops
Scientists have discovered that domestic corn and wild teosinte are evolutionary cousins — research suggests that native Americans domesticated maize from wild teosinte stocks using artificial selection — and so genes found in teosinte may also be useful in corn.
Popped Secret: The Mysterious Origin of Corn - BioInteractive
2015年3月2日 · This film explores the genetic and archaeological evidence that suggest that corn is the result of the domestication of a wild Mexican grass called teosinte. Ten thousand years ago, corn didn’t exist anywhere in the world, and until recently scientists argued …