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:5/16/2017)... May 16, 2017   Bridge Patient Portal ... and MD EMR Systems , an electronic ... for GE, have established a partnership to build ... and the GE Centricity™ products, including Centricity Practice ... These new integrations will allow healthcare ...
(Date:4/17/2017)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or ... 2016 Annual Report on Form 10-K on Thursday April 13, 2017 ... ... Investor Relations section of the Company,s website at http://www.nxt-id.com  under ... http://www.sec.gov . 2016 Year Highlights: ...
(Date:4/11/2017)... 11, 2017 No two people are ... the New York University Tandon School of Engineering ... found that partial similarities between prints are common ... mobile phones and other electronic devices can be ... vulnerability lies in the fact that fingerprint-based authentication ...
Breaking Biology News(10 mins):
(Date:8/23/2017)... Minneapolis, MN (PRWEB) , ... August 23, 2017 ... ... owned by health systems and academic medical centers. The network provides members nationally ... to limited-distribution drugs and biologics and restrictive payer agreements so members can provide ...
(Date:8/22/2017)... ... August 22, 2017 , ... KBioBox ... patented KBioBox technology, the extended GUIDE-Seq ananlysis. KBioBox has adapted their core technology ... be provide scientists with easy to understand reports, extended indel analysis, and translocation ...
(Date:8/21/2017)... MI (PRWEB) , ... August 21, 2017 , ... ... Awards: Healthcare Edition 2017. The awards recognize medical centers that have implemented innovative ... their efficiency of patient care protocols, competitive advantages, financial impact/value, and market need. ...
(Date:8/21/2017)... , ... August 21, 2017 , ... ... two speakers for this two-part educational webinar, in which attendees will learn about ... associated protein factor composition. Along with an overview of the development and validation ...
Breaking Biology Technology: