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ARS Home » Midwest Area » Urbana, Illinois » Soybean/maize Germplasm, Pathology, and Genetics Research » Research » Publications at this Location » Publication #148473
Title: THE ILLINOIS SCN TYPE TEST: PRACTICAL APPLICATION OF THE HG TYPE CLASSIFICATION SYSTEM

Author
item NIBLACK, TERRY - UNIV OF ILLINOIS
item Noel, Gregory
item LAMBERT, KRIS - UNIV OF ILLINOIS

Submitted to: Journal of Nematology
Publication Type: Abstract Only
Publication Acceptance Date: 7/12/2003
Publication Date: 9/1/2003
Citation: Niblack, T.L., Noel, G.R., Lambert, K.L. 2003. The Illinois SCN type test: practical application of the HG Type classification system. [abstract].Journal of Nematology. 35:355.

Interpretive Summary:

Technical Abstract: The HG Type classification system for soybean cyst nematode (SCN) populations involves indices of SCN virulence on seven soybean plant introductions (PI) and the susceptible cultivar Lee 74. Of the seven indicator lines, only three have been used to develop SCN-resistant soybean cultivars that are currently available to soybean producers in Illinois: PI 548402, PI 88788, and PI 437654 (indicator lines 1, 2, and 4 in the HG Type system). An incomplete HG Type test named the Illinois SCN Type test includes only these three indicator lines and Lee 74, and may include one or more additional cultivars for comparison. It is conducted in a hydroponic system so that lab personnel without greenhouse facilities are able to perform it after training, but otherwise conditions are as specified for HG Type tests. The results can be used in conjunction with data from yield trials, SCN-resistance screening, and lists of sources of resistance to aid cultivar selection decisions. Results obtained during the fall and winter of 2002-2003 suggest that this test will be very useful for growers whose SCN-resistant varieties are suffering damage due to SCN. The SCN Type test can be adapted easily to other states or regions.