Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

AgriLife Research breeder develops drought-tolerant corn

27.08.2008
At the end of the day, drought tolerance in corn has to equate to good yields and good quality, not just good looks, said a Texas AgriLife Research scientist.

Dr. Wenwei Xu, AgriLife Research corn breeder from Lubbock, is working with crosses between temperate and tropically adapted varieties of corn to find a drought-tolerant plant that performs well under reduced irrigation.

"With the continuing decline of the Ogallala Aquifer water level and increasing cost of pumping water, the use of drought-tolerant and high-yield corn hybrids is a key for sustainable corn production under limited irrigation," Xu said.

A field day was held recently at the North Plains AgriLife Research Station near Etter to demonstrate the differences between the parent plants and the offspring, or crosses.

"We hope to reduce the amount of water required for corn by at least 10 percent," Xu said.

Already the AgriLife Research program out of Lubbock has released four inbred lines of corn and numerous others are in the process for release, he said.

"The new multiple-stress-tolerant corn lines can be used to produce corn hybrids adapted to Texas and other southern states," Xu said. "They can be a powerful tool to save water and produce crops with yield and grain quality under stressful environments."

The research station at Etter is one of three test sites in Xu's program. The others are located at Halfway and Lubbock.

About 500 hybrids are being evaluated this year for either grain yield or silage yield and quality, he said.

Xu said there has been an increasing demand for silage corn in the Texas High Plains, and producers need new hybrids adapted to the local environment. Corn produced in the U.S. is primarily based on two races of maize, but there are more than 250 races identified around the world, Xu said.

"Most of our breeding efforts start by crossing tropical corn with temperate elite lines," he said. "Then we select for desirable traits to broaden genetic diversity and introduce useful genes from exotic corn to improve stress tolerance, agronomic productivity, disease resistance, insect resistance and value-added grain characteristics."

Xu said some of the experimental hybrids they are working with have produced the same silage yield under irrigation equaling 75 percent evapotranspiration as with 100 percent evapotranspiration irrigation.

Evapotranspiration is the loss of water from the soil both by evaporation and by transpiration from the plants, and is reported on a daily basis through the Texas High Plains Evapotranspiration Network ( http://txhighplainset.tamu.edu/ ).

Bruce Spinhirne, AgriLife Research associate based in Lubbock, said they reduced the irrigation on a few hybrids by 50 percent and had a severe yield and quality limitation, so they followed that by the 75 percent water application.

Those results are due in part to the use of stored moisture in the soil profile, Spinhirne said.

"At 75 percent (evapotranspiration), you have 3 to 4 inches of available moisture that is used, where if you are watering at 100 percent, it is wasted," he said.

The average silage yield of 20 corn hybrids at two locations (Etter and Halfway) was 26.84 tons per acre under 75 percent evapotranspiration irrigation, just slightly lower than the 27.49 tons per acre under 100 percent evapotranpiration irrigation, Spinhirne said.

However, he said, there were significant differences among hybrids in each environment.

"One of our experimental hybrids produced the same amount of silage in both locations when irrigation was reduced from 100 percent to 75 percent," Spinhirne said.

"Developing and using new corn hybrids with improved tolerance to drought and other stresses is important and a viable water-saving approach," he said.

Dr. Wenwei Xu | EurekAlert!
Further information:
http://www.tamu.edu
http://lubbock.tamu.edu/corn

More articles from Agricultural and Forestry Science:

nachricht Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University

nachricht New findings about the deformed wing virus, a major factor in honey bee colony mortality
11.11.2016 | Veterinärmedizinische Universität Wien

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Electron highway inside crystal

Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.

Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Researchers identify potentially druggable mutant p53 proteins that promote cancer growth

09.12.2016 | Life Sciences

Scientists produce a new roadmap for guiding development & conservation in the Amazon

09.12.2016 | Ecology, The Environment and Conservation

Satellites, airport visibility readings shed light on troops' exposure to air pollution

09.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>