Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 11/18/2014
Publication Date: 4/10/2015
Publication URL: http://handle.nal.usda.gov/10113/62120
Citation: Isbell, T.A., Cermak, S.C., Dierig, D.A., Eller, F.J., Marek, L. 2015. Registration of Katelyn Thlaspi arvense L. (Pennycress) with improved nondormant traits. Journal of Plant Registrations. 9:212-215.
Interpretive Summary: Katelyn Pennycress (Thlaspi arvense), a newly developed cultivar, was publicly released by the USDA Agriculture Research Service in 2014 as part of a new crop improvement program. Katelyn was developed by selection from the wild population, Beecher (Ames 29118) collected from a winter fallow cornfield 2 miles north of Hanna City, IL. The germination rate of the original parent (Beecher) was high as 7%. Katelyn seeds had a germination rate as high as 91% when grown under the same conditions as the Beecher seeds. This new cultivar will improve stand establishment of the crop and help alleviate the potential of pennycress to develop a seed bank in the soil by promoting the germination of seed spilled at harvest to grow and die under the canopy of the subsequent soybean crop where it should not be capable of competing. In addition, development of this crop will improve the economics of corn and soybean production by providing an off-season cash crop when the land is normally fallow.
Technical Abstract: Katelyn (Reg. No. GP-35, PI 673443) pennycress (Thlaspi arvense L.) was publicly released by the USDA-ARS in 2014 as part of a new crop improvement program. Katelyn was developed by two generations of mass selection based on the germination response of freshly harvested pennycress seeds. The original seed source was the wild population Beecher (PI 672505) collected from a winter fallow cornfield 3.2 km north of Hanna City, IL. The germination rate of the original parent seed under conditions of 12-h light/dark cycles at 27.5 deg. C/11.5 deg. C was 0%. Beecher seed kept in the dark under otherwise identical conditions germinated at 7% compared with Katelyn S2 seed, which had an immediate post-harvest germination rate of 91% for seed kept in the dark and 81% under the 12-h light/dark 27.5 deg. C/11.5 deg. C conditions.