Featured Research

from universities, journals, and other organizations

Pest-resistant soybeans developed

Date:
August 3, 2010
Source:
Michigan State University
Summary:
Two lines of pest-resistant soybean painstakingly developed. "Sparta -- the Soybean Aphid Shield" is the new trade name for one of the new lines. Researchers tested some 2,000 strains of soybeans against aphids to isolate four with different resistant genes.

Two lines of pest-resistant soybean painstakingly developed by a Michigan State University scientist promise healthier harvests for growers and a little green for the university too.

"Sparta -- the Soybean Aphid Shield" is the new trade name for genetics developed by Dechun Wang. The associate professor of crop and soil science tested some 2,000 strains of soybeans against aphids to isolate four with different resistant genes. From those he developed germplasm, or seeds to breed into varieties suited to Michigan's shorter growing season.

"The final goal," Wang said, "would be to have one variety that has all those resistant genes," maximizing protection against different biotypes of aphids and perhaps other pests such as Japanese beetle.

Soybean aphids suck plant sap and secrete sticky honeydew that promotes sooty black mold, and when they sprout wings can transmit plant viruses widely. Fifteen generations of aphid can live on a soybean plant in the summer, with eggs overwintering on nearby buckthorn.

"In the field, we will inoculate a plant with just two aphids, and the entire plant will be totally covered by aphids in a few weeks," Wang said. "It takes aphids just five days to produce more babies, and aphids are born pregnant, so the regeneration cycle is incredibly fast."

Soybean has been cultivated in Asia for thousands of years, but in America only since 1904. It is chiefly processed here into animal feed and vegetable oil. Tiny soybean aphids, also native to Asia, were first identified in Wisconsin in 2000, but quickly cut a wide swath until beaten back mostly with chemical pesticides. Unchecked, aphids can lay waste to half the output of a field, but one application of insecticide might add 10 percent to the cost of production -- and kill beneficial insects as well.

"That really has been our only answer until this new host plant material," said Keith Reinholt, field operations director for the Michigan Soybean Promotion Committee. His group invested about $250,000 in grower assessment revenue since 2002 to fund Wang's research, earning first claim on licensing rights after MSU patented the resistance technology.

The germplasm already is the subject of growing interest among seed companies, which will cross it with their own varieties. The grower board will earn royalties from sale of seed company varieties containing the trait. A portion of those will come back to MSU, which will in turn distribute royalties to Wang, the College of Agriculture and Natural Resources and to the MSU Foundation.

"With one exception, all the major soybean genetics companies have licensed his germplasm because the level of resistance to soybean aphids is very high," Department of Crop and Soil Sciences Chairperson James Kells said. "We're very excited about this technology, and we see great potential for commercialization and impact on soybean growers in Michigan and the U.S."

In addition to funding by growers, Wang's research is supported by the Michigan Agricultural Experiment Station.


Story Source:

The above story is based on materials provided by Michigan State University. Note: Materials may be edited for content and length.


Cite This Page:

Michigan State University. "Pest-resistant soybeans developed." ScienceDaily. ScienceDaily, 3 August 2010. <www.sciencedaily.com/releases/2010/08/100803112819.htm>.
Michigan State University. (2010, August 3). Pest-resistant soybeans developed. ScienceDaily. Retrieved April 17, 2014 from www.sciencedaily.com/releases/2010/08/100803112819.htm
Michigan State University. "Pest-resistant soybeans developed." ScienceDaily. www.sciencedaily.com/releases/2010/08/100803112819.htm (accessed April 17, 2014).

Share This



More Plants & Animals News

Thursday, April 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Great British Farmland Boom

The Great British Farmland Boom

Reuters - Business Video Online (Apr. 17, 2014) Britain's troubled Co-operative Group is preparing to cash in on nearly 18,000 acres of farmland in one of the biggest UK land sales in decades. As Ivor Bennett reports, the market timing couldn't be better, with farmland prices soaring over 270 percent in the last 10 years. Video provided by Reuters
Powered by NewsLook.com
Flamingo Frenzy Ahead of Zoo Construction

Flamingo Frenzy Ahead of Zoo Construction

AP (Apr. 17, 2014) With plenty of honking, flapping, and fluttering, more than three dozen Caribbean flamingos at Zoo Miami were rounded up today as the iconic exhibit was closed for renovations. (April 17) Video provided by AP
Powered by NewsLook.com
Change of Diet Helps Crocodile Business

Change of Diet Helps Crocodile Business

Reuters - Business Video Online (Apr. 16, 2014) Crocodile farming has been a challenge in Zimbabwe in recent years do the economic collapse and the financial crisis. But as Ciara Sutton reports one of Europe's biggest suppliers of skins to the luxury market has come up with an unusual survival strategy - vegetarian food. Video provided by Reuters
Powered by NewsLook.com
Could Even Casual Marijuana Use Alter Your Brain?

Could Even Casual Marijuana Use Alter Your Brain?

Newsy (Apr. 16, 2014) A new study conducted by researchers at Northwestern and Harvard suggests even casual marijuana use can alter your brain. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins