Welcome To Website IAS

Hot news
Achievement

Independence Award

- First Rank - Second Rank - Third Rank

Labour Award

- First Rank - Second Rank -Third Rank

National Award

 - Study on food stuff for animal(2005)

 - Study on rice breeding for export and domestic consumption(2005)

VIFOTEC Award

- Hybrid Maize by Single Cross V2002 (2003)

- Tomato Grafting to Manage Ralstonia Disease(2005)

- Cassava variety KM140(2010)

Centres
Website links
Vietnamese calendar
Library
Visitors summary
 Curently online :  61
 Total visitors :  7657200

Genome sequence of 5,310-year-old maize cob provides insights on its early domestication
Tuesday, 2016/11/29 | 08:50:03

Researchers from the Natural History Museum of Denmark published a study of a 5,310-year-old maize cob from the Tehuacan Valley of Mexico, providing new insights into the early stages of maize domestication.

 

In the gene-by-gene analysis, the ancient sample shows many key genes had already been modified through human selection, including the lack of a hard seed coat and changes in flowering time. Archaeological evidence suggests that 5,000 years ago, people who planted and consumed maize likely lived in small groups of people from extended families, which explains why the ancient Tehuacan Valley maize is morphologically and genetically so distinct from modern corn.

 

Jazmín Ramos Madrigal, one of the authors of the study said that these ancient people moved seasonally and mostly consumed wild plants and animals, supplementing their diets with some domesticated plants. It was only during later periods with higher populations and socially stratified societies that maize became a staple. She cites the Olmecs (~1200 BC) and the Maya (200BC – 1000 AD), who required reliable and predictable food sources to support their cities, and it was at that point that maize would have undergone further selection for important traits.

 

For more details, visit the University of Copenhagen website.

 

Photo: Ancient DNA from this 5310-year-old cob sheds light on maize domestication. Credit: Bruce Smith

Back      Print      View: 524

[ Other News ]___________________________________________________
  • Egypt Holds Workshop on New Biotech Applications
  • UN Agencies Urge Transformation of Food Systems
  • Taiwan strongly supports management of brown planthopper—a major threat to rice production
  • IRRI Director General enjoins ASEAN states to invest in science for global food security
  • Rabies: Educate, vaccinate and eliminate
  • “As a wife I will help, manage, and love”: The value of qualitative research in understanding land tenure and gender in Ghana
  • CIP Director General Wells Reflects on CIP’s 45th Anniversary
  • Setting the record straight on oil palm and peat in SE Asia
  • Why insect pests love monocultures, and how plant diversity could change that
  • Researchers Modify Yeast to Show How Plants Respond to Auxin
  • GM Maize MIR162 Harvested in Large Scale Field Trial in Vinh Phuc, Vietnam
  • Conference Tackles Legal Obligations and Compensation on Biosafety Regulations in Vietnam
  • Iloilo Stakeholders Informed about New Biosafety Regulations in PH
  • Global wheat and rice harvests poised to set new record
  • GM Maize Harvested in Vietnam Field Trial Sites
  • New label for mountain products puts premium on biological and cultural diversity
  • The Nobel Prize in Physiology or Medicine 2016
  • Shalabh Dixit: The link between rice genes and rice farmers
  • People need affordable food, but prices must provide decent livelihoods for small-scale family farmers
  • GM Seeds Market Growth to Increase through 2020 Due to Rise in Biofuels Use

 

Designed & Powered by WEBSO CO.,LTD