Orphan Crop Genomic Resource Development

Okra Plant

Guava root-knot nematode (Meloidogyne enterolobii) is a new and hypervirulent pest in the Southeast United States. It infects the roots of many crop plants, making many agronomic control practices such as crop rotation difficult. Genetic resistance is the preferred method of control, but the guava root-knot nematode easily overcomes the resistance genes to other root-knot nematode species. With our collaborator, Dr. William Rutter at the Vegetable Research Center in Charleston, SC, we found a single source of resistance in a wild chile pepper accession.

Jute Mallow

This NSF Plant Genome Research Program funded project developed breeding populations stacking RKN resistance genes, while also introgressing and mapping the novel source of resistance from the wild ancestor. Unraveling the complex resistance gene hotspots is underway through development of four high quality, low cost chile pepper (Capsicum annuum) genome assemblies.

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