Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Drought Tolerant Rice in Development

03.12.2010
Rice production faces the threat of a growing worldwide water scarcity. Approximately, 75% of the world’s rice is grown in flooded, lowland conditions. Lowland rice crops either rely on irrigation or rain water to provide adequate growing conditions. The food security of millions of people depends on the availability of water.

Scientists at the International Rice Research Institute (IRRI) have developed a rice crop that is not only drought tolerant but high yielding despite the lack of water. These genotypes have been dispersed to other Asian countries including Bangladesh, Cambodia, India, Laos, Nepal, Pakistan, and the Philippines.

The study was funded by the Asian Development Bank and the Bill and Melinda Gates Foundation and can be found in the November – December 2010 issue of Crop Science.

Originally, researchers planted different rice genotypes on two separate plots at IRRI headquarters in Los Baños. The field plots were of similar soil fertility and the crops were equally managed apart from receiving different amounts of water. Initial analysis found rice crops grown in drought like conditions show a decrease in plant height, harvest index, and grain yield.

Nevertheless, upon repeating the experiment, IRRI scientists were able to identify 26 second-generation aerobic rice genotypes that produced significant yields compared to the first generation crops. The rice crops subjected to less water yielded 50% more than the previous generation and further gains are expected as the cycle is repeated.

The use aerobic rice is a relatively new, but necessary trend. Aerobic rice crops eliminate the need for flooding, instead using long root systems to extract moisture from the soil. Water is still necessary to maintain the crop, however not at the volume used in lowland rice before.

Dr. Dule Zhao, one of the authors of the study, says, “Aerobic rice is a good strategy for coping with the increasing water shortage and ensuring rice food security in tropical regions. A breeding protocol is key to the success of a breeding program in developing new aerobic rice varieties.”

Aerobic rice breeding studies are continuing at IRRI. Researchers are attempting to develop rice crops that are drought tolerant and also weed competitive and high quality.

The full article is available for no charge for 30 days following the date of this summary. View the abstract at www.crops.org/publications/cs/abstracts/50/6/2268.

Crop Science is the flagship journal of the Crop Science Society of America. Original research is peer-reviewed and published in this highly cited journal. It also contains invited review and interpretation articles and perspectives that offer insight and commentary on recent advances in crop science. For more information, visit www.crops.org/publications/cs

The Crop Science Society of America (CSSA), founded in 1955, is an international scientific society comprised of 6,000+ members with its headquarters in Madison, WI. Members advance the discipline of crop science by acquiring and disseminating information about crop breeding and genetics; crop physiology; crop ecology, management, and quality; seed physiology, production, and technology; turfgrass science; forage and grazinglands; genomics, molecular genetics, and biotechnology; and biomedical and enhanced plants.

CSSA fosters the transfer of knowledge through an array of programs and services, including publications, meetings, career services, and science policy initiatives.

Sara Uttech | Newswise Science News
Further information:
http://www.crops.org

Further reports about: End User Development IRRI Science TV crop crop science molecular genetic rice crops

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: 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...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

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

Closing the carbon loop

08.12.2016 | Life Sciences

Applicability of dynamic facilitation theory to binary hard disk systems

08.12.2016 | Physics and Astronomy

Scientists track chemical and structural evolution of catalytic nanoparticles in 3-D

08.12.2016 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>