+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Reconstructing the ancestor of corn



Reconstructing the ancestor of corn



Proc. Amer. phil. Soc, 102: 454-63



Cobs of prehistoric (5600 years) corn from Bat Cave no larger than a penny contained the partial remains of a single kernel. Intensive study proved a type of pop corn in which the individual kernels were enclosed in a pod or chaff. These 2 characteristics are then regarded as primitive. In cultivated corn the single kernels are no longer held individually in a pod but are covered en masse by the shucks. The mechanism for seed dispersal has therefore been lost and corn could no longer reproduce itself without man's intervention. In a series of breeding experiments the evolutionary path of corn was retraced by continually combining and recombining primitive characteristics still occurring in surviving varieties. Most of the major steps along the way seem to have stemmed from a single mutation on chromosome 4 which reduced the glumes completely surrounding each kernel of wild corn and lowered the position of the lateral inflorescences. The latter effect resulted in a separation of the sexes and made for a larger, strictly grain-bearing ear which was no longer capable of dispersing its seeds.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 014163361

Download citation: RISBibTeXText


Related references

Ancestor of Corn: A genetic reconstruction yields clues to the nature of the extinct wild ancestor. Science 128(3335): 1313-1320, 1958

Reconstructing the gene map of the vertebrate ancestor. Animal Biotechnology 5(2): 113-122, 1994

Reconstructing man's Pliocene pongid ancestor. Unknown, 1962

Reconstructing the protostome/ deuterostome ancestor; the uses of history. Abstracts with Programs - Geological Society of America 28(7): 52-53, 1996

Pitfalls reconstructing the last common ancestor of chimpanzees and humans. Proceedings of the National Academy of Sciences of the United States of America 113(8): E943-E944, 2016

Fossil pollen and the origin of corn ancient pollen from deep cores in mexico shows the ancestor of corn to be corn and not its relative teosinte. Botanical Museum Leaflets Harvard University 26(7): 237-255, 1979

Reconstructing ancestor states with maximum likelihood: Support for one- and two-rate models. Systematic Biology 48(3): 623-633, 1999

Ancient pollen from deep cores in Mexico shows the ancestor of corn to be corn and not its relative, teosinte. Botanical Museum Leaflets, Harvard University 26(7): 237-255, 1978

On the last common ancestor and early evolution of eukaryotes: reconstructing the history of mitochondrial ribosomes. Research in Microbiology 162(1): 53-70, 2011

Reconstructing the ancestor of Mycobacterium leprae: the dynamics of gene loss and genome reduction. Genome Research 17(8): 1178-1185, 2007

Reconstructing Dryopteris "semicristata" (Dryopteridaceae): Molecular profiles of tetraploids verify their undiscovered diploid ancestor. American Journal of Botany 97(6): 998-1004, 2011

Ancestor of corn. Science 128(128): 1313-1320, 1958

Reconstructing the ancestry of corn. Proc Amer Phil Soc 102(5): 454-463, 1958

Virtual ancestor reconstruction: Revealing the ancestor of modern humans and Neandertals. Journal of Human Evolution 91: 57-72, 2016

The universal ancestor and the ancestors of Archaea and Bacteria were anaerobes whereas the ancestor of the Eukarya domain was an aerobe. Journal of Evolutionary Biology 20(2): 543-548, 2007