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Registration of Katelyn Thlaspi arvense L. (Pennycress) with Improved Nondormant Traits

Terry A. Isbell, Steven C. Cermak, David A. Dierig, Fred J. Eller, Laura F. Marek
Journal of plant registrations 2015 v.9 no.2 pp. 212-215
Agricultural Research Service, Thlaspi arvense, artificial selection, germplasm evaluation, germplasm releases, plant breeding, seed germination, seeds, Illinois
Katelyn (Reg. No. GP-35, PI 673443) pennycress (Thlaspi arvense L.) germplasm 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°C/11.5°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°C/11.5°C conditions.