News / Asia

In Philippines, Crop Researchers Try to Flood-proof Rice

FILE - A rice farmer sows seeds in Oton, Iloilo, Philippines.
FILE - A rice farmer sows seeds in Oton, Iloilo, Philippines.
Simone Orendain
Crop scientists from around the world are in the Philippines this week at the International Rice Research Institute, exchanging ideas on how flooded rice and other staple crops could stay alive for long periods. 
                                            
Scientists at the International Rice Research Institute have already found a way for several varieties of rice to live after being totally submerged for more than 10 days: certain kinds of rice can be crossbred with a gene called SUB1, which stops the rice from growing while it is underwater, thus preserving itself. About five years ago, farmers in the Philippines, Indonesia and several South Asian countries started growing these varieties.
 
Despite that success, IRRI Principal Scientist Abdelbagi Ismail says close to 25 million hectares of rice is lost to flooding every year in Asia and Africa alone.  There are about 150 million hectares of rice worldwide.
 
With one seventh of the total crop lost, Ismail says researchers want to find a way to make flooded rice survive even longer, so they are now looking more closely at the work of researchers who study how plants survive without oxygen.
 
 “Now SUB1 can protect up to two weeks, but sometimes we get floods up to 25 days.  So we lose it even with SUB1.  So we want to see if we can increase flooding tolerance by more than one week- additional to SUB1.  Any information that comes from these studies could help us,” explained Ismail.
 
Ismail also pointed out that IRRI, whose work is heavily focused on how rice adapts to flooding, is currently concentrating on three areas.  Scientists want to help inundated rice sprouts continue to grow normally, discover other genes that can perform the same function as SUB1, and breed varieties that can withstand total and partial submersion. This last goal will be particularly helpful for many rice-growing areas, as during the rainy season flooded soil will oftentimes never completely drain.
 
Researchers are still working to understand how plants are able to sense low oxygen levels, which sends them into survival mode.
 
Scientist Laurentius Voesenek, of the Netherlands’ Utrecht University, researches wild plants that live in partial submersion or flood-prone river areas, focusing on fundamental traits that help plants cope with flooding.  Voesenek’s work is on ethylene, a gas emitted by plants once they become submerged.
 
“Gases produced by the plant can only very slowly escape.  So if production continues it builds up and that is a very reliable signal for the plant to know ‘I’m under water.  I’m in trouble.  I have to do something.  Switch on genes which might protect,’” explains Voesenek.
 
Scientists are also sharing work on crops that can be grown despite stagnant flooding. Ismail says this work is important, and will help discover how farmers can use the wet soil of flooded rice fields for other staples such as maize, wheat and barley.

You May Like

Video VOA Exclusive: Poroshenko Wants Russia's UN Veto Stripped

Ukrainian president tells VOA's Myroslava Gongadze that global community would be safer if Russia's ability to play spoiler were ended More

Crime and Espionage Becoming Tangled Online

As the lines between cyber-crime and espionage blur, fighting hackers becomes harder More

Crowdfunding Helps Save Neil Armstrong's Spacesuit

Smithsonian turns to Kickstarter to raise more than $700,000 to help preserve the spacesuit worn by the first man to walk on the moon More

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Drowned Migrant Toddler Photo Triggers European Outragei
X
Henry Ridgwell
September 04, 2015 11:36 AM
The harrowing picture of a drowned three-year-old Syrian boy washed up on a Turkish beach appears to have galvanized Europe’s leaders into doing more to address the refugee crisis. France, Germany and Italy issued a joint call Thursday for compulsory quotas of refugees for all EU states. But there were chaotic scenes in Hungary as police tried to force migrants off a train heading for Austria. Henry Ridgwell has more. And a caution, some of the images in this report may be disturbing.
Video

Video Drowned Migrant Toddler Photo Triggers European Outrage

The harrowing picture of a drowned three-year-old Syrian boy washed up on a Turkish beach appears to have galvanized Europe’s leaders into doing more to address the refugee crisis. France, Germany and Italy issued a joint call Thursday for compulsory quotas of refugees for all EU states. But there were chaotic scenes in Hungary as police tried to force migrants off a train heading for Austria. Henry Ridgwell has more. And a caution, some of the images in this report may be disturbing.
Video

Video Russians Observe 11th Anniversary of Beslan School Attack

This week, Russians have been observing the 11th anniversary of the attack by Islamic militants on a school in Russia's North Caucasus region that killed more than 330 hostages, including 186 children. The three-day siege and massacre that started on September 1, 2004 took place in Beslan, a town in the republic of North Ossetia, and is one of the bloodiest terrorist acts ever in Russia. VOA's Mike Richman reports.
Video

Video Native Americans Debate: Father Serra, Saint or Sinner?

Pope Francis will canonize an 18th century missionary to Spanish California during a papal visit to the United States this month.  But some Native Americans have criticized the elevation to sainthood of the missionary priest, Junipero Serra. VOA's Mike O’Sullivan has more from Los Angeles.
Video

Video Calais School Offers Another Face of Europe’s Migrant Crisis

Europe is facing mounting criticism over how it’s handling its biggest migration crisis since World War II. But not all Europeans believe building walls or passing repressive policies are the answer. A school for migrants in the French port city of Calais, is opening doors and building bonds across nationalities. VOA's Lisa Bryant reports.
Video

Video Kurdish Fighters on IS Frontline Ready for Offensive

Finger on the trigger, the Kurdish Peshmerga soldier stared across the dust at a village taken over by Islamic State extremists. The Kurdistan’s Khazir frontline, just 45 minutes from the Islamic State stronghold of Mosul. And at this point, the militants were less than two kilometers away. VOA's Sharon Behn reports.
Video

Video China Announces Troop Cuts at WWII Parade

Chinese President Xi Jinping Thursday announced plans to cut the world’s largest military force by 300,000 troops. The announcement was made during a massive military parade to commemorate victory over Japan in World War II. The event was shunned by most Western leaders and for some is raising fresh concerns about China’s military ambitions. VOA’s Bill Ide has more from Beijing.
Video

Video Russia-Japan Relations Cool as Putin Visits China for WWII Anniversary

Russian President Vladimir Putin is in Beijing for commemorations of the 70th anniversary of China's WWII victory over Japan. Putin is expected to visit Japan later this year, but tensions between Tokyo and Moscow over islands disputed since the war, and sanctions over Ukraine, could pour cold water on the plan. VOA's Daniel Schearf reports.
Video

Video Yemen ‘on Brink of Disaster’ as Medical Shortages Soar

Aid agencies warn Yemen is on the brink of humanitarian disaster – with up to half a million children facing severe malnutrition, and hospitals running out of basic medicines. There are fears Yemen's civil war could escalate as the coalition led by Saudi Arabia tries to drive back Houthi rebels, who seized control of much of the country earlier this year. Henry Ridgwell reports.
Video

Video Apps Helping Kenyan Businesses Stay Ahead of Counterfeiters

Counterfeit goods in Kenya cost the government as much as $1 billion each year in lost tax revenues. The fake goods also hurt entrepreneurs who find it hard to carve out a niche in the market and retain customers. But as Lenny Ruvaga reports from Nairobi, information technology is being used to try to beat the problem.
Video

Video Nobel Prize Winner Malala Talks to VOA

Nobel Peace Prize winner Malala Yousafzai met with VOA's Deewa service in Washington Sunday to talk about women’s rights and unveil a trailer for her new documentary. VOA's Katherine Gypson has more.
Video

Video War, Drought Threaten Iraq's Marshlands

Iraq's southern wetlands are in crisis. These areas are the spawning ground for Gulf fisheries, a resting place for migrating wildfowl, and source of livelihood for fishermen and herders. Faith Lapidus has more.
Video

Video Colombians Flee Venezuela as Border Crisis Escalates

Hundreds of Colombians have fled Venezuela since last week, amid an escalating border crisis between the two countries. Last week, Venezuelan President Nicolas Maduro ordered the closure of a key border crossing after smugglers injured three Venezuelan soldiers and a civilian. The president also ordered the deportation of Colombians who are in Venezuela illegally. Zlatica Hoke reports.
Video

Video Rebuilding New Orleans' Music Scene

Ten years after Hurricane Katrina inundated New Orleans, threatening to wash away its vibrant musical heritage along with its neighborhoods, the beat goes on. As Bronwyn Benito and Faith Lapidus report, a Musicians' Village is preserving the city's unique sound.
Video

Video In Russia, Auto Industry in Tailspin

Industry insiders say country relies too heavily on imports as inflation cuts too many consumers out of the market. Daniel Schearf has more from Moscow.
Video

Video Scientist Calls Use of Fetal Tissue in Medical Research Essential

An anti-abortion group responsible for secret recordings of workers at a women's health care organization claims the workers shown are offering baby parts for sale, a charge the organization strongly denies. While the selling of fetal tissue is against the law in the United States, abortion and the use of donated fetal tissue for medical research are both legal. VOA’s Julie Taboh reports.

VOA Blogs