New ARS-Developed Soybean Line Resists Key Nematode

January 4, 2010 By Alfredo Flores
New ARS-Developed Soybean Line Resists Key Nematode
A new soybean line developed by ARS scientists incorporates genes for resistance to the most virulent soybean cyst nematode from three sources. Photo courtesy of NREL/DOE.

( -- A new soybean line developed by Agricultural Research Service (ARS) scientists is good news for growers. The line, JTN-5109, is effective against the most virulent soybean cyst nematode, called LY1.

The cyst nematode is a pervasive soybean pest worldwide. In the United States, the nematode is the most damaging soybean pest, causing an estimated yield loss of nearly 94 million bushels in 2007. Genetic resistance has been the most effective means of controlling the pest.

Nearly all nematode-resistant soybean varieties currently available contain resistance genes from one of two sources—soybean lines “Peking” or Plant Introduction (PI) 88788. JTN-5109, however, has combined nematode resistance from three sources—“Peking,” PI 437654 and PI 567516C.

JTN-5109 is the latest soybean line developed by geneticist Prakash Arelli and his team at the ARS Research Unit's satellite laboratory in Jackson, Tenn. The soybean was developed using a combination of traditional plant breeding and genetic marker-assisted selection. Arelli discussed the research at a meeting of the American Society of Agronomy and the Crop Science Society of America in November.

Nematode populations are genetically variable and have adapted to reproduce on resistant soybean cultivars over time. And in recent years, the LY1 nematode populations were found in Missouri, Illinois and Tennessee.

JTN-5109 provided yields of 26 bushels per acre in field studies conducted in 2008 at Jackson, Tenn., and Ames Plantation near Grand Junction, Tenn. That yield is not far below the 29 bushels per acre produced by 5601T, which is a commonly used cultivar, but one susceptible to LY1. The JTN-5109 line will be an excellent source material for breeding high-yielding soybeans with resistance to nematodes, especially for the LY1 population.

Arelli collaborated with scientists at the University of Tennessee, Michigan State University, Iowa State University, and the University of Missouri, as well as the ARS Corn and Soybean Research Unit at Wooster, Ohio, on the project.

Explore further: Outwitting pesky parasites

Related Stories

Outwitting pesky parasites

July 15, 2007

Across the southern United States, an invisible, yet deadly parasite known as the root-knot nematode is crippling soybean crops. While plant breeders are racing to develop cultivars resistant to the root-knot nematode, they ...

Simple soybean anything but - genetically, researcher says

December 16, 2008

( -- Think humans are complex creatures? Consider the lowly soybean, said a Purdue University researcher. When it comes to genetics, the soybean plant is far more intricate than that of a human, said Scott Jackson, ...

Recommended for you

Study suggests fish can experience 'emotional fever'

November 25, 2015

(—A small team of researchers from the U.K. and Spain has found via lab study that at least one type of fish is capable of experiencing 'emotional fever,' which suggests it may qualify as a sentient being. In their ...

A huge chunk of a tardigrade's genome comes from foreign DNA

November 23, 2015

Researchers from the University of North Carolina at Chapel Hill have sequenced the genome of the nearly indestructible tardigrade, the only animal known to survive the extreme environment of outer space, and found something ...


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.