Registration of Conventional Soybean Germplasm JTN-4307 with Resistance to Nematodes and Fungal Diseases

JTN-4307 (Reg. No. GP-407, PI 670017), a maturity group V soybean [Glycine max (L.) Merr.], was developed by the USDA-ARS with the University of Missouri and the University of Tennessee and released in 2013 for its broad resistance to soybean cyst nematode (SCN), reniform nematode, southern root knot nematode, and fungal diseases, especially frogeye leaf spot, southern stem canker, and moderate resistance to charcoal rot. JTN-4307 is an F-4-derived line from the cross of S97-1688 (PI 633736) x V94-0198. Selected F-4 lines were planted in 2004 in Jackson, TN, and the agronomically superior single plants were selected for progeny testing. Two F-4:5 progenies were planted in separate rows during 2005 and bulk harvested. Seeds of F-4:6 rows were evaluated in the greenhouse bioassays for SCN resistance, and molecular markers were used to confirm the results. Field tests for frogeye leaf spot and charcoal rot resistance were conducted in Milan, TN, and Jackson, respectively. Frogeye leaf spot resistance was confirmed using molecular markers. JTN-4307 was entered in the USDA Uniform Soybean Tests, Southern States from 2008 to 2013. JTN-4307 will serve as an excellent parent material in breeding programs for providing durable resistance to multiple nematode populations and fungal diseases.