Navigation Links
Unique gene combinations control tropical maize response to day lengths
Date:6/14/2011

MADISON, WI, JUNE 14, 2011 - Tropical maize proves to be a valuable genetic resource, containing genetics not found in USA Corn Belt maize. Most tropical maize varieties respond to the long summer day lengths that occur in U.S. growing regions by flowering late. This delayed flowering response results in poor yields, effectively trapping the useful genes and hindering their incorporation into maize hybrids adapted to the most productive corn growing regions.

Scientists from the United States Department of Agriculture Agricultural Research Service and North Carolina State University identified four regions of the maize genome that control much of the photoperiod response in maize. A diverse sample of maize lines bred in Mexico and Thailand were crossed into a standard Corn Belt maize line. Results of this study were reported in the May June issue of Crop Science, the scientific journal published by the Crop Science Society of America.

For each key day length response region, the researchers compared the effects of moving the genes from a tropical variety into a Corn Belt variety. Even at a single genome region, the effects of tropical genes differed, depending on which tropical variety they were bred from. In the most extreme case, the scientists discovered that genes from tropical varieties did not have uniform effects on delayed flowering at the genome region. One of the tropical varieties carried genes that made plants flower earlier than the standard Corn Belt variety.

James Holland, who conducted the study, stated: "We were pleased to validate the effects of these four day length response gene regions that we had identified in previous independent studies. However, we were surprised to discover that some tropical lines carry early flowering genes at our most important day length genome region. Our results highlight the amazing genetic variation that exists in both tropical and temperate maize."

This research supports findings of other scientists about the genomic position of key day length response genes and reveals unexpected diversity in their effects on flowering. Ongoing research is focused on identifying the specific genes controlling day length response that exist in these regions.


'/>"/>

Contact: Sara Uttech
suttech@sciencesocieties.org
608-268-4948
American Society of Agronomy
Source:Eurekalert

Related biology news :

1. European researchers harness unique properties of boron to develop new drugs and diagnostics
2. Caltech geobiologists discover unique magnetic death star fossil
3. GUMC and Oak Ridge National Labs announce unique research partnership
4. NC State takes research lead in protecting Puerto Ricos unique freshwater fisheries
5. Unique transatlantic tie-up to understand the aging process
6. Researchers find pathway and enzyme unique to tularemia organism
7. Rots unique wood degrading machinery to be harnessed for better biofuels production
8. Weizmann Institute scientists develop a unique approach for splitting water into hydrogen and oxygen
9. Climate change threatens Lake Baikals unique biota
10. New DNA and RNA aptamers offer unique therapeutic advantages
11. Unique winter-hardy hibiscus has roots with AgriLife Research scientist in Vernon
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/30/2017)... 2017  On April 6-7, 2017, Sequencing.com will host ... hackathon at Microsoft,s headquarters in Redmond, ... on developing health and wellness apps that provide a ... Genome is the first hackathon for personal genomics ... companies in the genomics, tech and health industries are ...
(Date:3/27/2017)... 27, 2017  Catholic Health Services (CHS) has ... Society (HIMSS) Analytics for achieving Stage 6 on ... . In addition, CHS previously earned a place ... an electronic medical record (EMR). "HIMSS ... of EMR usage in an outpatient setting.  This ...
(Date:3/22/2017)... 21, 2017   Neurotechnology , a provider ... today announced the release of the SentiVeillance ... improved facial recognition using up to 10 surveillance, ... computer. The new version uses deep neural-network-based facial ... it utilizes a Graphing Processing Unit (GPU) for ...
Breaking Biology News(10 mins):
(Date:6/19/2017)... ... June 19, 2017 , ... EDETEK, ... reported today that it is launching two new additions of its award-winning cloud-based ... new capabilities at the DIA 2017 Annual Meeting in Chicago, IL, June 19-22, ...
(Date:6/16/2017)... ... June 16, 2017 , ... ... solutions, today announced that its Anzo Smart Data Lake® (Anzo SDL) solution ... category for the 2017 Software & Information Industry Association (SIIA) CODiE Awards. ...
(Date:6/15/2017)... ... 2017 , ... The newest exhibition at the University City ... and interdisciplinary collaboration. Feature Creep, a solo exhibition by Maximillian Lawrence, opens on ... held at EKG, located at 3600 Market Street in Philadelphia, on Thursday, June ...
(Date:6/14/2017)... ... 2017 , ... Slone Partners welcomed a panel of premier ... search firm, “Building Value in Precision Medicine: Can We Overcome the Obstacles?” , ... an open discussion with expert panelists Troy Cox, CEO of Foundation Medicine, Barbara ...
Breaking Biology Technology: