Author
Arelli, Prakash |
Submitted to: American Journal of Pathology
Publication Type: Abstract Only Publication Acceptance Date: 3/6/2006 Publication Date: 3/8/2006 Citation: Arelli, P.R. 2006. New sources of resistance to soybean cyst newmatode in soybean. American Journal of Pathology. Vol. 33, p. 7 Interpretive Summary: Technical Abstract: In the United States, Soybean Cyst Nematode (SCN) (Heterodera glycines Ichinohe) caused more estimated total yield loss in soybean [Glycine max (L.) Merr.] from 1999 to 2002 than any other disease. These losses have remained stable with the use of resistant cultivars and cultural practices. Current resistant cultivars trace their resistance primarily to Peking and/or PI 88788. Nematodes can quickly adapt to resistant cultivars. Using cluster analyses, we have identified unique sources of SCN resistance in soybean. These include PI 89772, PI 438489B, PI 567516C, PI 437655, PI 507354 and PI 567286. We have evaluated over 1000 Soja accessions and identified resistance types including PI 468916. These are characterized for resistance to develop broad based germplasm for durable resistance to SCN. |