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Breeding for nematode resistance: new phenotypic tools for a new era
S. COOPER (1), A. Coburn (1), M. Easter (2), J. Yates (1). (1) Monsanto Company, Chesterfield, MO, U.S.A.; (2) Monsanto Company, Chestefield, MO, U.S.A.

The soybean cyst nematode (SCN), <i>Heterodera glycines</i> Ichinohe, is the most damaging pest of soybeans in the US.  Losses from SCN in have been estimated at $1 billion annually in the US alone.   The primary plant protection method is planting SCN resistance varieties.  Over 85% of soybean varieties on the marketplace have a form natural resistance to SCN. Although the underlying techniques for screening soybean lines for resistance has not changed much overtime, advances in molecular markers and automation can streamline and optimize the process.  Monsanto has reduced the number of data point required to characterize the pipeline, increased the number of pathotypes utilized to characterize the pipeline and reduced the cost of an individual data point through the use of molecular markers and innovations within the phenotyping screen.  In this session, we will discuss utilization of molecular markers to prioritize germplasm for screening and explore equipment to optimize the SCN phenotyping.   

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