Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/3/2017
Publication Date: 4/27/2017
Citation: Arelli, P.R., Shannon, G., Mengistu, A., Gillen, A.M., Fritz, L.A. 2017. Registration of conventional soybean germplasm JTN-4307 with resistance to nematodes and fungal diseases. Journal of Plant Registrations. 11(2):192-199.
Interpretive Summary: Soybean yields worldwide are limited by the soybean cyst nematode, a microscopic size roundworm attaching to the roots of the plant. Annual field losses in the U.S. exceed one billion dollars. Resistant cultivars have been the most effective means of controlling the nematodes. However, nematode populations are highly variable and over time will adapt to reproduce on resistant cultivars. Traditional breeding methods alone are time consuming for developing resistant soybean and with a combined technology of advanced genetics the development process will be more efficient and less time consuming. Recently we developed and released a new conventional soybean JTN-4307 with resistance to multiple nematode populations and fungal diseases using combined methodologies. Soybean JTN-4307 is a selection from cross: S97-1688 x V94-0198. The pedigrees for S97-1688 and V94-0198 included multiple nematode resistant and high yielding parents. Based on seed, yield data averaged across 28 locations in 2008-2012 in thirteen Southern States, JTN-4307 produced over 48 bushels/acre. It has averaged over 20% seed oil and 41% seed protein. It is maturity group V soybean and matured four days earlier when tested against AG5606, a commercial check. JTN-4307 has purple flowers, tawny pubescence and seed coats are yellow with black hilum. It has a determinate growth habit. JTN-4307 is resistant to several races of nematode populations: Frogeye leaf spot, reniform nematode, moderately resistant to Charcoal rot, resistant to Stem Canker and Southern root knot nematode. JTN-4307 will serve as an excellent source material with resistance to nematode populations and diseases, especially to Frogeye leaf spot, to breeders for developing more high yielding beans in different maturity groups. Growers may use JTN-4307 for planting to reduce the high seed costs associated with herbicide resistant commercial varieties.
Technical Abstract: JTN-4307 soybean [Glycine max (L.) Merr.] (Reg. No. XX-XXX, PI 670017) was developed by USDA-ARS in collaboration with the University of Missouri and the University of Tennessee, and released in 2013, for its broad resistance to soybean cyst nematode (Heterodera glycines Ichinohe), reniform nematodes (Rotylenchulus reniformis), Southern root knot nematode [Meloidogyne incognita (Kofoid & White)], and fungal diseases, especially to frogeye leaf spot (Cercospora sojina K. Hara), southern stem canker [Diaporthe phaseolorum var meridionalis (Cooke & Ellis)], and moderate resistance to charcoal rot [Macrophomina phaseolina (Tassi) Goid]. JTN-4307 is an F4-derived line from the cross of S97-1688 (PI 633736) x V94-0198. The cross was made in 1997 in Portageville, MO, and F4 seed was transferred to USDA-ARS in Jackson, TN in 2003. Selected F4 lines were planted in 2004 in Jackson, and the agronomically superior single plants were selected for progeny testing. Two F4:5 progenies were planted in separate rows during 2005 and bulk harvested. Seeds of F4:6 rows were evaluated in the greenhouse bioassays for SCN resistance, and molecular markers were used to confirm these results. Additional field testing 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 Uniform IV-S, and Uniform V tests for multiple years from 2008 to 2013. JTN-4307 will serve as an excellent parent in breeding programs for providing durable resistance to multiple nematode populations and fungal diseases.