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ARS Home » Midwest Area » Urbana, Illinois » Soybean/maize Germplasm, Pathology, and Genetics Research » Research » Publications at this Location » Publication #148475
Title: THE LEVEL OF RESISTANCE IN PROPRIETARY CULTIVARS RESISTANT TO HETERODERA GLYCINES IS NOT THE SAME

Author
item BOND, JASON - SOUTHERN IL UNIV
item NIBLACK, TERRY - UNIV OF ILLINOIS
item NOEL, GREGORY

Submitted to: Journal of Nematology
Publication Type: Abstract Only
Publication Acceptance Date: 4/20/2003
Publication Date: 7/4/2003
Citation: Bond, J.P., Niblack, T.L., Noel, G.R. 2003. The level of resistance in proprietary cultivars resistant to Heterodera glycines is not the same. [abstract]. Journal of Nematology. 35:327.

Interpretive Summary:

Technical Abstract: Approximately 350 cultivars described as resistant to Heterodera glycines are sold in Illinois and other Midwestern states. Greater than 90% of these cultivars utilize resistance obtained from PI88.788. In the past few growing seasons, increasing numbers of soybean producers have complained that their resistance to H. glycines is not durable. Shifts in the parasitic abilities of nematode populations represent one possibility for the lack of durable resistance. Another possibility is that recent cultivars do not carry the full compliment of resistance genes as originally provided by Fayette, a highly utilized resistance source. We determined the level of resistance of 367 cultivars to five populations of H. glycines identified as HG Types 3, 7, and 2.5.7 (races 1, 3, and 5), which comprise 90% of the populations in Illinois. Regardless of the HG Type, a large percentage of the cultivars did not carry adequate levels of resistance and would be ineffective in current rotation systems to manage H. glycines.