Navigation Links
Sunflower debate ends in Mexico, researchers say
Date:4/29/2008

TALLAHASSEE, Fla. -- Ancient farmers were growing sunflowers in Mexico more than 4,000 years before the Spaniards arrived, according to a team of researchers that includes Florida State University anthropologist Mary D. Pohl.

In an article published in the journal PNAS (Proceedings of the National Academy of Sciences), Pohl and lead author David Lentz of the University of Cincinnati said their evidence confirms that farmers began growing sunflowers in Mexico by 2600 B.C. The paper is in response to scientists who still believe that sunflowers were first domesticated as an agricultural crop in eastern North America and that the Spaniards introduced the sunflower to Mexico from further north.

The evidence shows that sunflower was actually domesticated twice -- in Mexico and then again hundreds of miles away in the Middle Mississippi Valley, Pohl said.

In fact, the researchers argue that after the Spanish Conquest, the Spaniards tried to suppress cultivation of the sunflower because of its association with solar religion and warfare.

Jos Luis Alvarado from Mexicos Institute of Anthropology and History, Robert Bye from the Independent National University of Mexico, and UC graduate student Somayeh Tarighatis also are co-authors of the PNAS study. The research was funded by grants from the National Science Foundation and the National Geographic Society.

Pohl and Kevin Pope of Geo Eco Arc Research discovered the early domesticated remains of sunflower a decade ago during an excavation of the San Andrs site in the modern-day Gulf Coast state of Tabasco. Alvarado found more evidence for domesticated sunflower in a dry cave deposit at Cueva del Gallo in the west Mexican state of Morelos in the form of three large achenes, or shells.

The Cueva del Gallo shells are in excellent condition and have unmistakable sunflower traits, removing all doubt about the pre-Columbian presence of domesticated sunflower in Mexico, Po
'/>"/>

Contact: Mary Pohl
mpohl@fsu.edu
850-644-8153
Florida State University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Ancient sunflower fuels debate about agriculture in the Americas
2. Student study bolsters case for adding a rare sunflower to the endangered species list
3. Student study bolsters case for adding a rare sunflower to the endangered species list
4. Scientists debate the accuracy of Al Gores documentary An Inconvenient Truth
5. Reprogramming the debate: stem-cell finding alters ethical controversy
6. St. Jude settles century-old debate on origin of mammalian network of lymphatic vessels
7. Carnegie Mellon researchers urge development of low carbon electricity
8. In computer models and observations, researchers see potential for significant red tide season
9. Montana State researchers study spread of lake trout in Glacier National Park
10. Medical College researchers find dinosaur clues in fat
11. Researchers discover gene for branchio-oculo-facial syndrome
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... have explored two different ways that allow unprecedented ... the formation of oxygen molecules in photosynthesis. The ... journal Nature Communications . , "The new ... for water oxidation, which are key components for ... of solar energy in fuels like hydrogen, ethanol ...
(Date:7/11/2014)... marginal division of the striatum is also involved ... degree of substance P in the striatal marginal ... and his team, College of Biophotonics, South China ... substance P receptor, neurokinin 1 was highly expressed ... normal rats. Unilateral or bilateral injection of an ...
(Date:7/11/2014)... Using spider toxins to study the proteins that let ... say they have stumbled upon a biological tactic that ... insect plagues in a safe and environmentally responsible way. ... be lethal for one species and harmless for a ... target specific pests without harming beneficial species like bees. ...
Breaking Biology News(10 mins):Molecular snapshots of oxygen formation in photosynthesis 2Potent spider toxin 'electrocutes' German, not American, cockroaches 2Potent spider toxin 'electrocutes' German, not American, cockroaches 3
... with dogs and using the latest in imaging software and ... heart specialists have developed a fast and accurate means of ... the coronary arteries. Researchers say it took them less ... echocardiograms currently used to find early warning of vessels more ...
... approach, researchers at Children's Hospital Boston have demonstrated that ... a heart attack and protect the heart from scarring. ... a natural inhibitor of cell division with a naturally ... Together, these two agents enabled heart-muscle cells to multiply ...
... Researchers at the Salk Institute for Biological Studies in collaboration ... took a high resolution "action shot" of a protein switch ... nervous system. Their findings, published in the Dec. 8 issue ... design of small molecule inhibitors to control that switch, a ...
Cached Biology News:Fast test for low blood flow in dogs detects early heart trouble 2Fast test for low blood flow in dogs detects early heart trouble 3Fast test for low blood flow in dogs detects early heart trouble 4Rescuing injured hearts by enhancing regeneration 2Rescuing injured hearts by enhancing regeneration 3Detailed 3-D image catches a key regulator of neural stem cell differentiation in action 2Detailed 3-D image catches a key regulator of neural stem cell differentiation in action 3
(Date:7/10/2014)... 10, 2014 Women in the ... to an additional family planning option. Sayana® Press ... at all levels of the health system and ... a widely used contraceptive—Pfizer’s Depo-Provera® (depot medroxyprogesterone acetate)—with ... is the first of four African countries expected ...
(Date:7/10/2014)... July 10, 2014 Deep Knowledge ... Medicine Forum on ‘Commercialising Longevity Research’ and welcomed ... to the London Bioscience Innovation Center for the ... and Aging Analytics Ltd. The meeting highlighted the ... translational research for age-related disease, as well as ...
(Date:7/10/2014)... Terascala, the industry leader in HPC ... former vice president of product management for Flexera Software, ... marketing. Terascala’s software when combined with leading compute and ... performance and most reliable solutions for processing big data. ... expansion and broaden its product portfolio. His leadership in ...
(Date:7/10/2014)... Robert Harman, DVM, Founder and CEO of Vet-Stem, Inc., the ... relaunch of his highly informative blog, now named Stem Cells ... are Stem Cells ?” Dr. Harman’s purpose for blogging ... basics of stem cell therapy so that pet owners can ... when considering regenerative medicine. , A veterinarian by trade, Dr. ...
Breaking Biology Technology:Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 2Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 3Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 4Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 5Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 6DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 2DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 3DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 5DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 6Terascala Expands Executive Team 2Terascala Expands Executive Team 3Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 2Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 3
... , SHANGHAI, Nov. ... Drug Administration (SFDA) has approved the,investigational new drug application (IND) ... treat diabetes. This IND,approval allows Biolaxy to initiate its first ... is a disorder characteristic of high blood glucose and poor,metabolism. ...
... ... by laboratories participating in or generating DNA records for the National DNA Index System. ... Madison, WI USA (PRWEB) -- ... laboratories participating in, or generating DNA records for, the National DNA Index System (NDIS). NDIS ...
... HTL , TORONTO, Nov. 24 /PRNewswire-FirstCall/ - Hamilton Thorne Ltd. (TSX-V: ... systems and instruments for the stem cell research and fertility clinic ... ended September 30, 2009. , , Q3 2009 ... compared with $1.43 million in Q3 2008, - ...
Cached Biology Technology:Biolaxy Secures IND Approval for Oral Insulin 2NDIS Approval of Promega PowerPlex Kit Clears Path for More DNA Profiles to be Added to U.S. Database 2Hamilton Thorne announces third quarter results 2Hamilton Thorne announces third quarter results 3Hamilton Thorne announces third quarter results 4Hamilton Thorne announces third quarter results 5Hamilton Thorne announces third quarter results 6Hamilton Thorne announces third quarter results 7Hamilton Thorne announces third quarter results 8Hamilton Thorne announces third quarter results 9Hamilton Thorne announces third quarter results 10
... Polynucleotide Kinase catalyzes the transfer ... to the 5-terminus of polynucleotides ... 5-hydroxyl group. The enzyme, purified ... be used to phosphorylate RNA, ...
...
... Freezers for IVF are designed for human ... ease of setup and operation, and convenience. ... are continuously displayed on the control panel. ... are printed by way of the thermal ...
Anti-VDAC (Voltage-Dependent Anion Channel) AVOID FREEZE/THAW CYCLES. Recognizes the porin 31HL protein. Corresponds to mAb 1 in the literature....
Biology Products: