Registration of 'TN14-5021', a conventional soybean cultivar with elevated seed protein and resistance to soybean cyst nematode races 2, 3, and 5

'TN14-5021' (Reg. no. CV-543, PI 699124) is a late maturity group IV (relative maturity 4.9) determinate conventional soybean [Glycine max (L.) Merr.] cultivar developed and released by the University of Tennessee soybean breeding program. Soybean cultivars with resistance to soybean cyst nematode (SCN) race 2 are rare, but race 2 is becoming a predominant SCN population infecting farmers' fields in regions of the U.S. Southeast and Mid-South. TN14-5021 also conveys resistance to stem canker [caused by Diaporthe phaseolorum (Cooke & Ellis) Sacc. var. caulivora K.L. Athow & R.M. Caldwell] and strong resistance to SCN races 3 and 5. In replicated trials across 70 environments from the Mid-South to the Southeast, TN-5021 showed high yield potential and adaptation to a broad range of growing conditions. TN14-5021 has white flowers and gray pubescence. The pods have a tan pod coat, and the seeds are yellow with smooth seed coats. Across 48 environments over a 4-yr period, with testing locations from Kansas to Alabama, TN14-5021 averaged 406 and 226 g kg(-1) protein and oil content, respectively. In comparison, the average protein and oil content of commercial cultivars grown in the same tests averaged 397 and 224 g kg(-1), respectively. Its high yield coupled with elevated seed protein concentration and nematode resistance package make TN14-5021 a valuable cultivar for Tennessee and the Mid-South region.

Automated summary

TN14-5021 is a late maturity group IV determinate conventional soybean variety with resistance to stem canker, strong resistance to certain SCN races, and high yield potential. It has white flowers, gray pubescence, and yellow seeds with smooth seed coats, making it a valuable cultivar for Tennessee and the Mid-South region.