Registration of ‘MN-Rothsay’ spring wheat with high grain yield and lodging resistance

Authors: ANDERSON, JAMES - University Of Minnesota; WIERSMA, JOCHUM - University Of Minnesota Crookston; REYNOLDS, SUSAN - University Of Minnesota; CONLEY, EMILY - University Of Minnesota; STUART, NATHAN - University Of Minnesota; Caspers, Roger; Kolmer, James; Rouse, Matthew; Jin, Yue; DILL-MACKY, RUTH - University Of Minnesota; SMITH, MADELEINE - University Of Minnesota; Dykes, Linda

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/26/2024
Publication Date: 9/29/2024
Citation: Anderson, J.A., Wiersma, J.J., Reynolds, S.K., Conley, E.J., Stuart, N., Caspers, R.A., Kolmer, J.A., Rouse, M.N., Jin, Y., Dill-Macky, R., Smith, M.J., Dykes, L. 2024. Registration of ‘MN-Rothsay’ spring wheat with high grain yield and lodging resistance. Journal of Plant Registrations. 19(1). Article e20400. https://doi.org/10.1002/plr2.20400.
DOI: https://doi.org/10.1002/plr2.20400

Interpretive Summary: ‘MN-Rothsay’ (Reg. No. CV-1208, PI 702731) hard red spring wheat (Triticum aestivum) was released by the University of Minnesota Agricultural Experiment Station in 2022 because of its high grain yield and lodging resistance. MN-Rothsay is a medium-late maturity cultivar with below average plant height. The lodging resistance of MN-Rothsay is similar to ‘Linkert’, a 2013 release that was the most widely grown cultivar in Minnesota from 2016 to 2020, largely due to its superior lodging resistance. MN-Rothsay has moderate resistance to the disease Fusarium head blight , good resistance to prevalent races of pathogens causing leaf rust and stem rust, and is well-adapted to the north central United States.

Technical Abstract: ‘MN-Rothsay’ (Reg. No. CV-1208, PI 702731) hard red spring wheat (Triticum aestivum) was released by the University of Minnesota Agricultural Experiment Station in 2022 because of its high grain yield and lodging resistance. MN-Rothsay is a medium-late maturity cultivar with below average plant height, containing the semi-dwarfing alleles Rht-B1b and Rht24b. The lodging resistance of MN-Rothsay is similar to ‘Linkert’, a 2013 release that was the most widely grown cultivar in Minnesota from 2016 to 2020, largely due to its superior lodging resistance. MN-Rothsay has moderate resistance to Fusarium head blight (caused primarily by Fusarium graminearum Schwabe), good resistance to prevalent races of pathogens causing leaf rust (Puccinia triticina Eriks.) and stem rust (P. graminis Pers.: Pers. f. sp. tritici Eriks. & E. Henn.), and is well-adapted to the north central United States.