ARS | Publication request: SOYBEAN.APHID.1.SD.2011

Submitted to: Germplasm Resources Information Network (GRIN)
Publication Type: Other
Publication Acceptance Date: September 26, 2012
Publication Date: September 26, 2012
Citation: Hesler, L.S., Bhusal, S.J., Jiang, G., Tilmon, K.J. 2012. SOYBEAN.APHID.1.SD.2011. USDA-ARS Germplasm Resources Information Network (GRIN). Available: www.ars-grin.gov/npgs/.

Interpretive Summary: The soybean aphid has been a major insect pest of soybean in the United States since 2000. Identification and genetic characterization of plant resistance to soybean aphid in early maturing soybean will facilitate development of aphid-resistant soybean lines for the northern production region. To identify new sources of resistance in early maturing soybeans, a total of 334 soybean lines including resistant and susceptible checks were tested in the greenhouse and field. Caged and non-caged tests were employed in greenhouse screening with artificial inoculation of soybean aphids, and field evaluations were performed with or without artificial inoculation. Four genotypes (PI 430491, PI 464911, PI 603432B, and PI 603712) were resistant, and three genotypes (PI 612759B, PI 200595, and PI 603426D) were moderately resistant. Five of six resistant control lines (PI 71506, PI 243540, PI 567541B, PI 567543C, and PI 567597C) were resistant, but PI 548663 was susceptible. All other lines were susceptible.

Technical Abstract: Soybean aphid (SA, Aphis glycines Matsumura) has been an important pest of soybean (Glycine max (L.) Merr.) in the United States since 2000. Identification and genetic characterization of SA resistance in early maturing soybean germplasm will facilitate development of aphid-resistant cultivars in northern region. To identify new sources of SA resistance in early maturing soybeans, a total of 334 soybean genotypes including resistant and susceptible checks were tested in the greenhouse and field. Caged (no-choice) and non-caged tests were employed in greenhouse screening under artificial inoculation of SA, and field evaluations were performed relying on natural aphid infestation with or without artificial SA inoculation. Four genotypes (PI 430491, PI 464911, PI 603432B, and PI 603712) were resistant, and three genotypes (PI 612759B, PI 200595, and PI 603426D) were moderately resistant. Five of six resistant control lines (PI 71506, PI 243540, PI 567541B, PI 567543C, and PI 567597C) were resistant, but PI 548663 was susceptible. All other lines were susceptible.