|Morris, John - Brad|
Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: 2/1/2002
Publication Date: 8/1/2002
Citation: Walker, J.T., Morris, J.B. Jackbean accessions, as soil amendments, vary in suppressing root-knot nematode. Phytopathology, 2002. Phytopathology abstract (2002).
Technical Abstract: Environmental issues associated with commercial pesticides plus the ultimate phase-out of methylbromide has stimulated research on biological control of plant parasitic nematodes using jackbeans. The production of jackbeans at the USDA Plant Genetic Resources Conservation Unit (Griffin, GA) led us to investigate their activity as soil amendments against root-knot nematode, "Meloidogyne incognita" as well as the genetic variability for nematode reduction among jackbean accessions. Plant tissue from 16 accessions of "Canavalia ensiformis" were mixed separately at 0, 1, and 2% (w/w) with soil containing 6,000 nematode eggs per kg. Genetic variation in root-knot nematode suppression occurred among these jackbean accessions. Jackbeans hold promise as "natural value added" compounds or as green manure crops for nematode control and contain sufficient genetic variation for breeding superior cultivars with nematode fighting capacity.