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North Carolina GEM Project 2012

The North Carolina GEM Project 2012, led by USDA/ARS researchers Matthew Krakowsky and Dale Dowden, involved extensive breeding and yield trials across five NC locations, including Clayton and Kinston. The project featured 1900 plus rows in nursery and isolation settings, producing twelve GEM breeding crosses and over 8000 yield trial plots. Despite variable yields influenced by water challenges, the project aims to enhance germplasm for future breeding across multiple cooperators, including major agricultural companies.

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North Carolina GEM Project 2012

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  1. North Carolina GEM Project 2012 USDA/ARS: Matthew Krakowsky and Dale Dowden NC State: Major Goodman, A. Wayne Dillard and William Hill Grad Students: Oliver Ott and Jill Recker

  2. Nursery • Approx. 1900 rows plus 800 rows in isolation • Twelve GEM breeding crosses for S1 development (Four Brazilian accessions, 1 Guatemalean, 1 Thai, 1 Peruvian, 1 US) • Six GEM S1’s for S2 development (CIMMYT and NC inbreds) • Thirty-three new breeding crosses produced (18 GEM x GEM and 15 tropical x GEM) • GEM bulk increases for released lines and potential releases

  3. Yield Trials • Approx. 8400 yield trial plots in NC • Five NC locations: Clayton, Kinston (Caswell and Cunningham farms), Lewiston, Salisbury • Mixed results with low/variable yields at some locations (too much water) • Additional 5100 plots coordinated from Raleigh • Two public, five private company cooperators • Water issues at some locations

  4. Germplasm in trials S2 families derived from GEM breeding crosses GEM released lines Potential new germplasm for breeding crosses

  5. Allelic Diversity • 400 summer nursery rows and 320 winter rows • Thirty-six BC1 families and forty F1s completed in 2013 • Extra effort made to cross late maturing accessions in winter nursery

  6. GEM-Raleigh Cooperators Dupont Pioneer Monsanto Dow Agrosciences University of Tennessee AgReliant Genetics Pannar GEM-Ames

  7. Questions?

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