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

Pantalone, Vince; Fallen, Ben; Wyman, Chris; Cunicelli, Mia

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

2022

Pantalone, Vince | Fallen, Ben | Wyman, Chris | Cunicelli, Mia

‘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.

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