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ARS Home » Southeast Area » Stoneville, Mississippi » Crop Genetics Research » Research » Publications at this Location » Publication #165009
Title: Assessing Heterodera glycines Resistant and Susceptible Yield Response in North Central USA

Author
item Donald, Patricia
item PIERSON, P - MONSANTO
item ST. MARTIN, S - OHIO STATE UNIVERSITY
item SELLERS, P - PURDUE
item Noel, Gregory
item MACGUIDWIN, A - UNIV OF WISCONSIN
item FAGHIHI, J - PURDUE
item FERRIS, V - PURDUE
item GRAU, C - UNIV OF WISCONSIN
item JARDIN, D - KANSAS STATE UNIVERSITY

Submitted to: Journal of Nematology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/1/2005
Publication Date: 1/1/2006
Citation: Donald, P.A., Pierson, P.E., St. Martin, S.K., Sellers, P.R., Noel, G.R., Macguidwin, A.G., Faghihi, J., Ferris, V.R., Grau, C.R., Jardin, D.J. 2006. Assessing Heterodera glycines Resistant and Susceptible Yield Response in North Central USA. Journal of Nematology. 38:76-82.

Interpretive Summary: Soybean cyst nematode (SCN) is a major pest and yield limiter in soybean production in the United States. Soybean yield of SCN resistant and susceptible varieties of maturity groups I-IV was measured in 63 fields in 10 north central USA states during 1994-95. Yield of the selected public varieties ranged from 3 to 88 bushels/acre in 1994, and from 5 to 73 bushels/acre in 1995, and yield was not perfectly related to the SCN egg population level. In general in this study with the public varieties selected, SCN-resistant varieties out-yielded susceptible varieties when the field was SCN infested, and susceptible varieties yielded higher in uninfested fields or fields with low levels of SCN. The extent of soybean yield loss was not directly related to the level of SCN eggs detected in soil samples at planting. These results demonstrate the importance of planting SCN resistant varieties in infested fields. Testing to determine if SCN is present is vital and will reduce the risk of yield loss across different soil types, maturity groups, and geographical locations.

Technical Abstract: The soybean cyst nematode (Heterodera glycines Ichinohe) (SCN) is widely distributed throughout soybean production regions of the United States and is of major economic importance. In 1994 and 1995, research sites were established in 63 fields, either infested or non-infested, in 10 states in the north central USA to assess the impact on yield of planting SCN resistant and susceptible soybean cultivars. Eight SCN-resistant and eight SCN-susceptible public soybean cultivars representing MGs I to IV were planted. Soil samples were taken at planting to determine initial nematode population, SCN race, and soil classification. Soybean yields were 658 to 3840 kg/ha across the sites. Soybean cyst nematode-resistant cultivars yield better at SCN-infested sites but lost this superiority to susceptible soybean cultivars at noninfested sites. Highly significant interactions were measured among initial nematode population, cultivar, and location. Therefore, no region-wide predictive equations could be developed for yield loss based on initial nematode populations in the soil. Yield loss due to SCN was confounded by other stress factors which included temperature and moisture extremes.