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Inheritance of soybean aphid resistance in 21 soybean plant introductions
- Fox, Carolyn M., Kim, Ki-Seung, Cregan, Perry B., Hill, Curtis B., Hartman, Glen L., Diers, Brian W.
- Theoretical and applied genetics 2014 v.127 no.1 pp. 43
- Aphis glycines, Glycine max, Hemiptera, Mendelian inheritance, USDA, dominant genes, genetic markers, germplasm conservation, greenhouse experimentation, insect pests, introduced plants, loci, soybeans, Canada, United States
- The soybean aphid [Aphis glycines Matsumura (Hemiptera: Aphididae)] is one of the most important insect pests of soybean [Glycine max (L.) Merr] in the northern USA and southern Canada, and four resistance loci (Rag1– rag4) have been discovered since the pest was identified in the USA in 2000. The objective of this research was to determine whether resistance expression in recently identified soybean aphid-resistant plant introductions (PIs) was associated with the four Rag loci using a collection of 21 F2 populations. The F2 populations were phenotyped with soybean aphid biotype 1, which is avirulent on plants having any of the currently identified Rag genes, using choice tests in the greenhouse and were tested with genetic markers.