|Seabourn, Bradford - Brad|
Submitted to: Journal of Plant Registrations
Publication Type: Peer reviewed journal
Publication Acceptance Date: 4/8/2007
Publication Date: 9/1/2007
Citation: Carver, B.F., Hunger, R.M., Edwards, J.T., Porter, D.R., Peeper, T.F., Seabourn, B.W., Rayas-Durate, P., Klatt, A.R., Martin, B.C. 2007. Registration of 'Okfield' wheat. Journal of Plant Registrations. 1(2):102-103. Interpretive Summary: Germplasm release.
Technical Abstract: 'Okfield' (Reg. No. CV-_______, PI 643087) is a hard red winter (HRW) wheat (Triticum aestivum L.) cultivar developed and released cooperatively by the Oklahoma Agric. Exp. Stn. (AES) and the USDA-ARS in 2005. It is recommended for dryland wheat production using either grain-only and dual-purpose management systems in the west-central Great Plains. Reasons for its release were tolerance to imazamox herbicide, improved winter dormancy retention relative to other imazamox-tolerant cultivars, and good stay-green capacity of the flag leaf. Okfield resulted from a single cross between an imazamox-tolerant BC3F2 plant with the pedigree,TXGH12588-120*4/FS4, and the HRW experimental line, HBZ374C, eventually released as '2174' by the Oklahoma AES and the USDA-ARS in 1997. 2174 has the pedigree IL71-5662/'PL145' (PI 600840)//'2165'. TXGH12588-120 is a non-released sister line of the HRW wheat cultivar, 'TAM 110', and FS4 was derived by sodium azide-induced mutagenesis of the cultivar 'Fidel'. The BC3F2 population was provided by American Cyanamid Co. Ownership of the gene mutation was subsequently transferred to BASF Corporation. The F1 plant generation was produced in the greenhouse in 1998, and the F2 generation was advanced at Stillwater the following year. Single heads were collected from plants which survived a single application of imazamox (36 g a.i. ha-1) in February 1999.