Submitted to: Journal of Nematology
Publication Type: Abstract Only
Publication Acceptance Date: May 1, 2004
Publication Date: December 1, 2004
Citation: Donald, P.A., Young, L.D. 2004. Charlacterization of two soybean cyst nematode populations that reproduce on pi437654 source of resistance. Journal of Nematology. 36:315. Technical Abstract: Two soybean cyst nematode populations, LY1 and LY2, capable of reproducing on PI 437654 were identified in West Tennessee in 1995. One population was developed in the greenhouse and has a phenotype of Race 4 or HG Type 220.127.116.11.5.6.7. Reproduction was 82%, 57%, and 176% respectively on Hartwig, Anand, and 4944 (CystX) in relation to Lee 74 (PI 548658). The second population was collected from field soil and has a phenotype identical to the former population. Reproduction was 52%, 80% and 68% on Hartwig, Anand, and 4944 in relation to Lee 74 (PI 548658). Producers surveyed indicate that 15% of soybean production fields in West Tennessee were planted to Anand in 2003. In comparison, a Race 2 or HG Type 18.104.22.168 population has 1%, 14% and 0.6% reproduction on Hartwig, Anand, and 4944, respectively in relation to Lee 74. A Race 14 or HG Type 22.214.171.124.7 population had 0.4%, 7% and 3% reproduction on Hartwig, Anand, and 4944, respectively in relation to Lee 74. A Race 3 population or HG Type 0 had 0.3%, 9% and 1% reproduction on Harwig, Anand, and 4944, respectively in relation to Lee 74.