Journal of Nematology (2007) 39, p. 76 (Faghihi et al.)

From Pestinfo-Wiki
Jump to: navigation, search

J. Faghihi, S.P. Conley and V.R. Ferris (2007)
Field reaction of selected SCN-resistant soybean germplasm toward SDS
Journal of Nematology 39 (1), 76-76
Abstract - Society of Nematologists 46th Annual Meeting San Diego, California July 28-August 1, 2007
Abstract: Soybean cyst nematode (SCN) and sudden death syndrome (SDS) are two of the most damaging pests of soybean in Indiana and the north central region of the United States. Many researchers have characterized their relationship as synergistic. In 2004 field studies, we observed marked differences in the reactions toward SDS among sources of SCN resistance used to characterize HG types. Peking, PI 88788, PI 90763, PI 89772 and PI 437654 showed slight to severe SDS symptoms, while Cloud and PI 209332 showed few or no SDS symptoms. Other researchers have documented a lack of visible SDS symptoms on the SCN-resistant cultivar Hartwig. Soon after the release of our PUSCN14 germplasm (known as CystX), developed from a cross between Hartwig and Williams 82, we noticed a reaction toward SDS similar to that of Hartwig. Our 2006 field studies showed that commercial CystX cultivars appear to share this characteristic of PUSCN 14 germplasm. Commercial CystX cultivars, marketed as Gold and Silver, demonstrated different degree of SCN resistance and also reacted differently toward SDS based on the percentage of PUSCN14 present in them. The CystX gold cultivar containing at least 90% PUSCN14 showed few SDS symptoms, while symptoms of the silver cultivars varied. We hypothesize that the reaction in silver cultivars can vary with the percentage of PUSCN14 and other genome characteristic of the soybean cultivar.
Database assignments for author(s): Shawn P. Conley, Virginia R. Ferris

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Heterodera glycines Soybean (Glycine max) U.S.A. (NE)
Soybean sudden death syndrome Soybean (Glycine max) U.S.A. (NE)