Ohio Closer To Aphid Resistance

While some areas will begin planting soybean aphid-resistant plants this coming season, growers in Ohio will have to wait a little longer. A soybean plant introduction (PI) has been found to show resistance to soybean aphid in that state, paving the way to control the insect through new resistant cultivars as soon as 2010.

 

The soybean PI, labeled PI 243540, contains a single dominant gene — named Rag2 — that allows the plant to resist soybean aphid feeding and aphid colonization. This finding is the latest in a series of national research efforts to more effectively manage soybean aphid. The University of Illinois, Michigan State University, and Kansas State University have all identified their own soybean plant lines that show resistance to soybean aphid.

 

Actually, the new plant line was identified after a known soybean aphid-resistant plant developed by the University of Illinois failed to produce the desired results in Ohio. Scientists realized that the soybean aphid biotype in Ohio was different than the one in Illinois and could overcome resistance to Illnois’ Rag1 gene, not all that surprising since soybean aphids are capable of developing new bioteypes very rapidly.

 

The scientists at Ohio State University‘s Ohio Agricultural Research and Development Center are working to develop a food-grade soybean cultivar that the Ohio biotype won’t colonize. The research is designed to transfer the Rag2 gene into susceptible soybean varieties and test their resistance to the aphid in both the greenhouse and in the field. Researchers are seeing promising results and hope to have breeding lines available for release by the end of 2010 if agronomic characteristics — such as yield and resistance to major diseases — hold up.

 

In addition to PI 243540, other soybean plant introductions that show resistance to soybean aphid have been identified by the Ohio scientists, albeit on a moderate level. The hope is that those findings can be used to develop partial-resistant soybean cultivars, whereby multiple genes rather than a single, dominant gene define resistance.

 

Soybean cultivars containing the Rag1 gene should be commercially available beginning next year. However, these cultivars are not recommended for Ohio growers. If they choose to plant these new cultivars, their control option will still be to spray insecticides when aphid populations reach threshold.

(Source: The Ohio State University)

 

Leave a Reply

Latest News
ManagementTrip Report, PSM R.I.P, and Ag’s Reaction to Federal Bu…
May 25, 2017
Editors Paul Schrimpf and Eric Sfiligoj talk about their recent travels, the end for Process Safety Management (PSM), and how Read More
Corn soil
LegislationARA Member Testifies Before Senate Ag Committee
May 25, 2017
Agricultural retailers stand on the front-lines of the American economy. As trusted advisors to America’s farmers, ag retailers are uniquely Read More
Young corn plants in soil
Crop InputsFortenza Insecticide Seed Treatment Receives EPA Regist…
May 25, 2017
Fortenza seed treatment insecticide from Syngenta has received registration approval from the U.S. EPA for use on corn and cotton Read More
ManagementFarm Market iD’s Agriculture Database Now Covers More T…
May 25, 2017
Farm Market iD, farmmarketid.com, has announced the release of its 2017 Annual Update of its farm and land database. The Read More
Food IT Fork-to-Farm
Precision AgThe Mixing Bowl Event Connects Technology, Food, and Ag…
May 24, 2017
For the fourth consecutive year, The Mixing Bowl presents FOOD IT, under the theme “Fork to Farm.” Action-oriented entrepreneurs, industry Read More
Photo credit: The United Soybean Board/The Soybean Checkoff.
Seed/BiotechKansas State University Researchers Find New Pathogens …
May 24, 2017
A single seed seems so simple. Put it in the ground, give it some care, and you’ve soon grown food. Read More
Soybean Field
HerbicidesNew Dicamba Herbicide Premix Coming Soon from Syngenta
May 24, 2017
Syngenta has announced the name of its new herbicide featuring the active ingredients of S-metolachlor and dicamba. Upon registration by Read More
Eric SfiligojMonsanto ‘Picks Its Battles’ by Nixing Deere Deal
May 23, 2017
Having been in the trade journalism game since the mid-1980s, I remember several watershed moments during my career. One of Read More
FungicidesSyngenta Launches New Seed Treatment Fungicide
May 22, 2017
Syngenta has announced the launch of PLENARIS seed treatment fungicide for the control of downy mildew in sunflower. PLENARIS contains Read More
Corn close up
Crop InputsMonsanto’s First HPPD Herbicide Garners EPA Appro…
May 19, 2017
Monsanto announced today that EPA has federally approved Harness MAX Herbicide, the first herbicide in the Monsanto portfolio to provide Read More
ManagementPrecision Planting Deal, China Developments, and Enviro…
May 18, 2017
Editors Eric Sfiligoj and Dan Jacobs discuss the latest news on John Deere’s now dead deal for Precision Planting, China’s Read More
Soybean aphid leaf
InsecticidesMulti-state Research Reveals IPM Best Option for Treatm…
May 17, 2017
About 89.5 million acres of soybeans will be planted across the U.S. in 2017 — a record high, according to Read More
GROWMARK-2017-Interns
CropLife 100GROWMARK Names 2017 Summer Interns
May 16, 2017
Forty-two college students are exploring agricultural career opportunities this summer as GROWMARK interns. They are working at FS member cooperatives Read More
Migrant farm workers
LegislationTrump: Immigration Crackdown Won’t Impact U.S. Ag…
May 16, 2017
President Donald Trump said he would seek to keep his tough immigration enforcement policies from harming the U.S. farm industry Read More
Flooded corn in Indiana
FertilizerBoth Wet and Dry Conditions Threaten Nitrogen Loss
May 15, 2017
The weather is notoriously unpredictable, leading to challenges for planting, harvesting and applying the nitrogen (N) your corn crop needs. Read More
farmer Kip Tom
Precision AgAg Tech: On the Cusp of Something Big?
May 15, 2017
The investment and ag-tech sectors’ continuing courtship of agriculture, smoldering for three or four years now, was well in evidence at Read More
AGCO Ratliff featured
Eric SfiligojRemembering Robert Ratliff
May 15, 2017
With all the fast-paced happenings in agriculture this spring, with multiple mergers in the works and planting season in full Read More
Greg Musson, Gar Tootelian
ManagementOpinion: Shaking Your Perspective in Ag Retail
May 12, 2017
Some of you I’m sure have encountered our recently retired salesman extraordinaire, Dan Bellanger. He worked in the industry for Read More