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SCN-Resistant Soybean Varieties

There are hundreds of SCN-resistant soybean varieties available to Iowa soybean farmers. These varieties vary greatly in their agronomic productivity as well as their ability to control the soybean cyst nematode (SCN).  The largest project in the Tylka research laboratory annually evaluates SCN-resistant varieties for yield and effects on SCN population densities. This work is funded by the soybean checkoff through a grant from the Iowa Soybean Association. Read more about SCN-Resistant Soybean Varieties

Greenhouse Resistance Screening

Soybean genotypes will be evaluated for resistance to soybean cyst nematode (SCN), Heterodera glycines, by growing the plants in infested soil-sand mix for approximately 30 days, after which the numbers of adult SCN females and cysts on the roots will be assessed. Subsequently, the reaction of individual plants of each soybean genotype to SCN will be classified based on the criteria presented by D.P. Schmitt and G. Shannon in "Differentiating Soybean Responses to Heterodera glycines races", 1992, Crop Science 32(1):275-277.